{"url":"http://public2.vulnerablecode.io/api/packages/936131?format=json","purl":"pkg:deb/debian/pyjwt@2.6.0-1?distro=trixie","type":"deb","namespace":"debian","name":"pyjwt","version":"2.6.0-1","qualifiers":{"distro":"trixie"},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"2.12.1-1","latest_non_vulnerable_version":"2.12.1-1","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/24430?format=json","vulnerability_id":"VCID-shhe-tubm-f7f8","summary":"PyJWT accepts unknown `crit` header extensions\n## Summary\n\nPyJWT does not validate the `crit` (Critical) Header Parameter defined in\nRFC 7515 §4.1.11. When a JWS token contains a `crit` array listing\nextensions that PyJWT does not understand, the library accepts the token\ninstead of rejecting it. This violates the **MUST** requirement in the RFC.\n\nThis is the same class of vulnerability as CVE-2025-59420 (Authlib),\nwhich received CVSS 7.5 (HIGH).\n\n---\n\n## RFC Requirement\n\nRFC 7515 §4.1.11:\n\n> The \"crit\" (Critical) Header Parameter indicates that extensions to this\n> specification and/or [JWA] are being used that **MUST** be understood and\n> processed. [...] If any of the listed extension Header Parameters are\n> **not understood and supported** by the recipient, then the **JWS is invalid**.\n\n---\n\n## Proof of Concept\n\n```python\nimport jwt  # PyJWT 2.8.0\nimport hmac, hashlib, base64, json\n\n# Construct token with unknown critical extension\nheader = {\"alg\": \"HS256\", \"crit\": [\"x-custom-policy\"], \"x-custom-policy\": \"require-mfa\"}\npayload = {\"sub\": \"attacker\", \"role\": \"admin\"}\n\ndef b64url(data):\n    return base64.urlsafe_b64encode(data).rstrip(b\"=\").decode()\n\nh = b64url(json.dumps(header, separators=(\",\", \":\")).encode())\np = b64url(json.dumps(payload, separators=(\",\", \":\")).encode())\nsig = b64url(hmac.new(b\"secret\", f\"{h}.{p}\".encode(), hashlib.sha256).digest())\ntoken = f\"{h}.{p}.{sig}\"\n\n# Should REJECT — x-custom-policy is not understood by PyJWT\ntry:\n    result = jwt.decode(token, \"secret\", algorithms=[\"HS256\"])\n    print(f\"ACCEPTED: {result}\")\n    # Output: ACCEPTED: {'sub': 'attacker', 'role': 'admin'}\nexcept Exception as e:\n    print(f\"REJECTED: {e}\")\n```\n\n**Expected:** `jwt.exceptions.InvalidTokenError: Unsupported critical extension: x-custom-policy`\n**Actual:** Token accepted, payload returned.\n\n### Comparison with RFC-compliant library\n\n```python\n# jwcrypto — correctly rejects\nfrom jwcrypto import jwt as jw_jwt, jwk\nkey = jwk.JWK(kty=\"oct\", k=b64url(b\"secret\"))\njw_jwt.JWT(jwt=token, key=key, algs=[\"HS256\"])\n# raises: InvalidJWSObject('Unknown critical header: \"x-custom-policy\"')\n```\n\n---\n\n## Impact\n\n- **Split-brain verification** in mixed-library deployments (e.g., API\n  gateway using jwcrypto rejects, backend using PyJWT accepts)\n- **Security policy bypass** when `crit` carries enforcement semantics\n  (MFA, token binding, scope restrictions)\n- **Token binding bypass** — RFC 7800 `cnf` (Proof-of-Possession) can be\n  silently ignored\n- See CVE-2025-59420 for full impact analysis\n\n---\n\n## Suggested Fix\n\nIn `jwt/api_jwt.py`, add validation in `_validate_headers()` or\n`decode()`:\n\n```python\n_SUPPORTED_CRIT = {\"b64\"}  # Add extensions PyJWT actually supports\n\ndef _validate_crit(self, headers: dict) -> None:\n    crit = headers.get(\"crit\")\n    if crit is None:\n        return\n    if not isinstance(crit, list) or len(crit) == 0:\n        raise InvalidTokenError(\"crit must be a non-empty array\")\n    for ext in crit:\n        if ext not in self._SUPPORTED_CRIT:\n            raise InvalidTokenError(f\"Unsupported critical extension: {ext}\")\n        if ext not in headers:\n            raise InvalidTokenError(f\"Critical extension {ext} not in header\")\n```\n\n---\n\n## CWE\n\n- CWE-345: Insufficient Verification of Data Authenticity\n- CWE-863: Incorrect Authorization\n\n## References\n\n- [RFC 7515 §4.1.11](https://www.rfc-editor.org/rfc/rfc7515.html#section-4.1.11)\n- [CVE-2025-59420 — Authlib crit bypass (CVSS 7.5)](https://osv.dev/vulnerability/GHSA-9ggr-2464-2j32)\n- [RFC 7800 — Proof-of-Possession Key Semantics](https://www.rfc-editor.org/rfc/rfc7800)","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32597.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32597.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-32597","reference_id":"","reference_type":"","scores":[{"value":"0.0001","scoring_system":"epss","scoring_elements":"0.01053","published_at":"2026-04-16T12:55:00Z"},{"value":"0.0001","scoring_system":"epss","scoring_elements":"0.01126","published_at":"2026-04-21T12:55:00Z"},{"value":"0.0001","scoring_system":"epss","scoring_elements":"0.01061","published_at":"2026-04-18T12:55:00Z"},{"value":"0.0001","scoring_system":"epss","scoring_elements":"0.01058","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00013","scoring_system":"epss","scoring_elements":"0.02299","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00013","scoring_system":"epss","scoring_elements":"0.02306","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00013","scoring_system":"epss","scoring_elements":"0.02343","published_at":"2026-04-29T12:55:00Z"},{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.00914","published_at":"2026-04-04T12:55:00Z"},{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.00913","published_at":"2026-04-02T12:55:00Z"},{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.00917","published_at":"2026-04-09T12:55:00Z"},{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.0092","published_at":"2026-04-08T12:55:00Z"},{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.00906","published_at":"2026-04-11T12:55:00Z"},{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.00901","published_at":"2026-04-12T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-32597"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-32597","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-32597"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/jpadilla/pyjwt","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/jpadilla/pyjwt"},{"reference_url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T14:48:42Z/"}],"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32597","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32597"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130662","reference_id":"1130662","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130662"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447194","reference_id":"2447194","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447194"},{"reference_url":"https://github.com/advisories/GHSA-752w-5fwx-jx9f","reference_id":"GHSA-752w-5fwx-jx9f","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-752w-5fwx-jx9f"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:10140","reference_id":"RHSA-2026:10140","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2026:10140"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:10141","reference_id":"RHSA-2026:10141","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2026:10141"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:10184","reference_id":"RHSA-2026:10184","reference_type":"","scores":[],"url"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PyJWT 1.5.0 and below the `invalid_strings` check in `HMACAlgorithm.prepare_key` does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string `-----BEGIN RSA PUBLIC KEY-----` which is not accounted for. This enables symmetric/asymmetric key confusion attacks against users using the PKCS1 PEM encoded public keys, which would allow an attacker to craft JWTs from scratch.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-11424.json","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-11424.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2017-11424","reference_id":"","reference_type":"","scores":[{"value":"0.00193","scoring_system":"epss","scoring_elements":"0.40938","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00193","scoring_system":"epss","scoring_elements":"0.41021","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00525","scoring_system":"epss","scoring_elements":"0.67031","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00525","scoring_system":"epss","scoring_elements":"0.67011","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00847","scoring_system":"epss","scoring_elements":"0.74881","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00847","scoring_system":"epss","scoring_elements":"0.74873","published_at":"2026-04-16T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.79597","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.7959","published_at":"2026-04-01T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.79619","published_at":"2026-04-04T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.79606","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.79634","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.79643","published_at":"2026-04-09T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.79663","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.79648","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01288","scoring_system":"epss","scoring_elements":"0.7964","published_at":"2026-04-13T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2017-11424"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11424","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11424"},{"reference_url":"https://github.com/advisories/GHSA-r9jw-mwhq-wp62","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-r9jw-mwhq-wp62"},{"reference_url":"https://github.com/jpadilla/pyjwt","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/jpadilla/pyjwt"},{"reference_url":"https://github.com/jpadilla/pyjwt/pull/277","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/jpadilla/pyjwt/pull/277"},{"reference_url":"https://github.com/pypa/advisory-database/tree/main/vulns/pyjwt/PYSEC-2017-24.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pypa/advisory-database/tree/main/vulns/pyjwt/PYSEC-2017-24.yaml"},{"reference_url":"http://www.debian.org/security/2017/dsa-3979","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.debian.org/security/2017/dsa-3979"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1482529","reference_id":"1482529","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1482529"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=873244","reference_id":"873244","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=873244"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11424","reference_id":"CVE-2017-11424","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11424"},{"reference_url":"https://usn.ubuntu.com/3407-1/","reference_id":"USN-3407-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/3407-1/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/936132?format=json","purl":"pkg:deb/debian/pyjwt@1.4.2-1.1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@1.4.2-1.1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936133?format=json","purl":"pkg:deb/debian/pyjwt@1.7.1-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@1.7.1-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936131?format=json","purl":"pkg:deb/debian/pyjwt@2.6.0-1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.6.0-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936135?format=json","purl":"pkg:deb/debian/pyjwt@2.10.1-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.10.1-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936134?format=json","purl":"pkg:deb/debian/pyjwt@2.11.0-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.11.0-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/1077478?format=json","purl":"pkg:deb/debian/pyjwt@2.12.1-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.12.1-1%3Fdistro=trixie"}],"aliases":["CVE-2017-11424","GHSA-r9jw-mwhq-wp62","PYSEC-2017-24"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-42yf-7k7m-dkf6"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/14578?format=json","vulnerability_id":"VCID-5zts-netw-syay","summary":"PyJWT Issuer field partial matches allowed\n### Summary\nThe wrong string if check is run for `iss` checking, resulting in `\"acb\"` being accepted for `\"_abc_\"`.\n\n### Details\nThis is a bug introduced in version [2.10.0](https://github.com/jpadilla/pyjwt/commit/1570e708672aa9036bc772476beae8bfa48f4131#diff-6893ad4a1c5a36b8af3028db8c8bc3b62418149843fc382faf901eaab008e380R366): checking the \"iss\" claim\nchanged from `isinstance(issuer, list)` to `isinstance(issuer,\nSequence)`.\n\n```diff\n-        if isinstance(issuer, list):\n+        if isinstance(issuer, Sequence):\n            if payload[\"iss\"] not in issuer:\n                raise InvalidIssuerError(\"Invalid issuer\")\n        else:\n```\n\nSince str is a Sequnce, but not a list, `in` is also used for string\ncomparison. This results in `if \"abc\" not in \"__abcd__\":` being\nchecked instead of `if \"abc\" != \"__abc__\":`.\n### PoC\nCheck out the unit tests added here: https://github.com/jpadilla/pyjwt-ghsa-75c5-xw7c-p5pm\n```python\n        issuer = \"urn:expected\"\n\n        payload = {\"iss\": \"urn:\"}\n\n        token = jwt.encode(payload, \"secret\")\n\n        # decode() succeeds, even though `\"urn:\" != \"urn:expected\". No exception is raised.\n        with pytest.raises(InvalidIssuerError):\n            jwt.decode(token, \"secret\", issuer=issuer, algorithms=[\"HS256\"])\n```\n\n\n### Impact\n\nI would say the real world impact is not that high, seeing as the signature still has to match. We should still fix it.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-53861.json","reference_id":"","reference_type":"","scores":[{"value":"2.2","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-53861.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2024-53861","reference_id":"","reference_type":"","scores":[{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77298","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77283","published_at":"2026-04-26T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77278","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77244","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77253","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77167","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77211","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77215","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77236","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77208","published_at":"2026-04-09T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77199","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77156","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77185","published_at":"2026-04-04T12:55:00Z"},{"value":"0.01019","scoring_system":"epss","scoring_elements":"0.77251","published_at":"2026-04-16T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2024-53861"},{"reference_url":"https://github.com/jpadilla/pyjwt","reference_id":"","reference_type":"","scores":[{"value":"2.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N"},{"value":"2.1","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/jpadilla/pyjwt"},{"reference_url":"https://github.com/jpadilla/pyjwt/commit/1570e708672aa9036bc772476beae8bfa48f4131#diff-6893ad4a1c5a36b8af3028db8c8bc3b62418149843fc382faf901eaab008e380R366","reference_id":"","reference_type":"","scores":[{"value":"2.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N"},{"value":"2.1","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T11:10:51Z/"}],"url":"https://github.com/jpadilla/pyjwt/commit/1570e708672aa9036bc772476beae8bfa48f4131#diff-6893ad4a1c5a36b8af3028db8c8bc3b62418149843fc382faf901eaab008e380R366"},{"reference_url":"https://github.com/jpadilla/pyjwt/commit/33022c25525c1020869c71ce2a4109e44ae4ced1","reference_id":"","reference_type":"","scores":[{"value":"2.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N"},{"value":"2.1","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T11:10:51Z/"}],"url":"https://github.com/jpadilla/pyjwt/commit/33022c25525c1020869c71ce2a4109e44ae4ced1"},{"reference_url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-75c5-xw7c-p5pm","reference_id":"","reference_type":"","scores":[{"value":"2.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N"},{"value":"LOW","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"2.1","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T11:10:51Z/"}],"url":"https://github.com/jpadilla/pyjwt/security/advisories/GHSA-75c5-xw7c-p5pm"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53861","reference_id":"","reference_type":"","scores":[{"value":"2.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N"},{"value":"2.1","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53861"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2329527","reference_id":"2329527","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2329527"},{"reference_url":"https://github.com/advisories/GHSA-75c5-xw7c-p5pm","reference_id":"GHSA-75c5-xw7c-p5pm","reference_type":"","scores":[{"value":"LOW","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-75c5-xw7c-p5pm"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/936137?format=json","purl":"pkg:deb/debian/pyjwt@0?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@0%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936133?format=json","purl":"pkg:deb/debian/pyjwt@1.7.1-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@1.7.1-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936131?format=json","purl":"pkg:deb/debian/pyjwt@2.6.0-1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.6.0-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936135?format=json","purl":"pkg:deb/debian/pyjwt@2.10.1-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.10.1-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/936134?format=json","purl":"pkg:deb/debian/pyjwt@2.11.0-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-shhe-tubm-f7f8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.11.0-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/1077478?format=json","purl":"pkg:deb/debian/pyjwt@2.12.1-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/pyjwt@2.12.1-1%3Fdistro=trixie"}],"aliases":["CVE-2024-53861","GHSA-75c5-xw7c-p5pm"],"risk_score":1.4,"exploitability":"0.5","weighted_severity":"2.7","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-5zts-netw-syay"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/8874?format=json","vulnerability_id":"VCID-dq17-gzkv-1bdb","summary":"PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requires that the application chooses what algorithms are supported. The application can specify `jwt.algorithms.get_default_algorithms()` to get support for all algorithms, or specify a single algorithm. The issue is not that big as `algorithms=jwt.algorithms.get_default_algorithms()` has to be used. Users should upgrade to v2.4.0 to receive a patch for this issue. As a workaround, always be explicit with the algorithms that are accepted and expected when 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