{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/82961?format=json","vulnerability_id":"VCID-1nps-zrhs-4bg6","summary":"sigstore-python is a Python tool for generating and verifying Sigstore signatures. Prior to version 4.2.0, the sigstore-python OAuth authentication flow is susceptible to Cross-Site Request Forgery. `_OAuthSession` creates a unique \"state\" and sends it as a parameter in the authentication request but the \"state\" in the server response seems not not be cross-checked with this value. Version 4.2.0 contains a patch for the issue.","aliases":[{"alias":"CVE-2026-24408"},{"alias":"GHSA-hm8f-75xx-w2vr"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/38186?format=json","purl":"pkg:pypi/sigstore@4.2.0","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/sigstore@4.2.0"}],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-24408","reference_id":"","reference_type":"","scores":[{"value":"7e-05","scoring_system":"epss","scoring_elements":"0.00534","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-24408"},{"reference_url":"https://github.com/sigstore/sigstore-python","reference_id":"","reference_type":"","scores":[{"value":"0.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/sigstore/sigstore-python"},{"reference_url":"https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa","reference_id":"5e77497fe8f0b202bdd118949074ec2f20da69aa","reference_type":"","scores":[{"value":"0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"0.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-27T21:35:04Z/"}],"url":"https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24408","reference_id":"CVE-2026-24408","reference_type":"","scores":[{"value":"0.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24408"},{"reference_url":"https://github.com/advisories/GHSA-hm8f-75xx-w2vr","reference_id":"GHSA-hm8f-75xx-w2vr","reference_type":"","scores":[{"value":"LOW","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-hm8f-75xx-w2vr"},{"reference_url":"https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr","reference_id":"GHSA-hm8f-75xx-w2vr","reference_type":"","scores":[{"value":"0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"0.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"LOW","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-27T21:35:04Z/"}],"url":"https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr"},{"reference_url":"https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0","reference_id":"v4.2.0","reference_type":"","scores":[{"value":"0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"0.0","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-27T21:35:04Z/"}],"url":"https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0"}],"weaknesses":[{"cwe_id":352,"name":"Cross-Site Request Forgery (CSRF)","description":"The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request."}],"exploits":[],"severity_range_score":"0.0 - 3","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-1nps-zrhs-4bg6"}