Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/887055?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/887055?format=api", "purl": "pkg:pypi/virtualenv@20.33.0", "type": "pypi", "namespace": "", "name": "virtualenv", "version": "20.33.0", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": "20.36.1", "latest_non_vulnerable_version": "20.36.1", "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/20751?format=api", "vulnerability_id": "VCID-5gxd-gbyg-ebg7", "summary": "virtualenv Has TOCTOU Vulnerabilities in Directory Creation\n## Impact\n\nTOCTOU (Time-of-Check-Time-of-Use) vulnerabilities in `virtualenv` allow local attackers to perform symlink-based attacks on directory creation operations. An attacker with local access can exploit a race condition between directory existence checks and creation to redirect virtualenv's app_data and lock file operations to attacker-controlled locations.\n\n**Affected versions:** All versions up to and including 20.36.1\n\n**Affected users:** Any user running `virtualenv` on multi-user systems where untrusted local users have filesystem access to shared temporary directories or where `VIRTUALENV_OVERRIDE_APP_DATA` points to a user-writable location.\n\n**Attack scenarios:**\n- Cache poisoning: Attacker corrupts wheels or Python metadata in the cache\n- Information disclosure: Attacker reads sensitive cached data or metadata\n- Lock bypass: Attacker controls lock file semantics to cause concurrent access violations\n- Denial of service: Lock starvation preventing virtualenv operations\n\n## Patches\n\nThe vulnerability has been patched by replacing check-then-act patterns with atomic `os.makedirs(..., exist_ok=True)` operations.\n\n**Fixed in:** PR #3013\n\n**Versions with the fix:** 20.36.2 and later\n\nUsers should upgrade to version 20.36.2 or later.\n\n## Workarounds\n\nIf you cannot upgrade immediately:\n\n1. Ensure `VIRTUALENV_OVERRIDE_APP_DATA` points to a directory owned by the current user with restricted permissions (mode 0700)\n2. Avoid running `virtualenv` in shared temporary directories where other users have write access\n3. Use separate user accounts for different projects to isolate app_data directories\n\n## References\n\n- GitHub PR: https://github.com/pypa/virtualenv/pull/3013\n- Vulnerability reported by: @tsigouris007\n- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (TOCTOU)\n- CWE-59: Improper Link Resolution Before File Access", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-22702.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-22702.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-22702", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02605", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02542", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02554", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02454", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02567", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02466", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02461", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02478", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02477", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.0248", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.025", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02479", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.02471", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00014", "scoring_system": "epss", "scoring_elements": "0.0247", "published_at": "2026-04-13T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-22702" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-22702", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-22702" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/pypa/virtualenv", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pypa/virtualenv" }, { "reference_url": "https://github.com/pypa/virtualenv/commit/dec4cec5d16edaf83a00a658f32d1e032661cebc", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "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/2026-01-12T16:44:05Z/" } ], "url": "https://github.com/pypa/virtualenv/commit/dec4cec5d16edaf83a00a658f32d1e032661cebc" }, { "reference_url": "https://github.com/pypa/virtualenv/pull/3013", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "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/2026-01-12T16:44:05Z/" } ], "url": "https://github.com/pypa/virtualenv/pull/3013" }, { "reference_url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-597g-3phw-6986", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "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/2026-01-12T16:44:05Z/" } ], "url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-597g-3phw-6986" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22702", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22702" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1125191", "reference_id": "1125191", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1125191" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428441", "reference_id": "2428441", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428441" }, { "reference_url": "https://github.com/advisories/GHSA-597g-3phw-6986", "reference_id": "GHSA-597g-3phw-6986", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-597g-3phw-6986" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/62530?format=api", "purl": "pkg:pypi/virtualenv@20.36.1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/virtualenv@20.36.1" } ], "aliases": [ "CVE-2026-22702", "GHSA-597g-3phw-6986" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-5gxd-gbyg-ebg7" } ], "fixing_vulnerabilities": [], "risk_score": "3.1", "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/virtualenv@20.33.0" }