Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/503844?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/503844?format=api", "purl": "pkg:pypi/flask-caching@1.3.0", "type": "pypi", "namespace": "", "name": "flask-caching", "version": "1.3.0", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": null, "latest_non_vulnerable_version": null, "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/156890?format=api", "vulnerability_id": "VCID-mybf-vfz1-yfgb", "summary": "The Flask-Caching extension through 1.10.1 for Flask relies on Pickle for serialization, which may lead to remote code execution or local privilege escalation. If an attacker gains access to cache storage (e.g., filesystem, Memcached, Redis, etc.), they can construct a crafted payload, poison the cache, and execute Python code. NOTE: a third party indicates that exploitation is extremely unlikely unless the machine is already compromised; in other cases, the attacker would be unable to write their payload to the cache and generate the required collision", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-33026", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.16282", "scoring_system": "epss", "scoring_elements": "0.94998", "published_at": "2026-06-13T12:55:00Z" }, { "value": "0.16282", "scoring_system": "epss", "scoring_elements": "0.95001", "published_at": "2026-06-14T12:55:00Z" }, { "value": "0.16282", "scoring_system": "epss", "scoring_elements": "0.94997", "published_at": "2026-06-12T12:55:00Z" }, { "value": "0.16282", "scoring_system": "epss", "scoring_elements": "0.9498", "published_at": "2026-06-11T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-33026" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33026", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33026" }, { "reference_url": "https://github.com/advisories/GHSA-656c-6cxf-hvcv", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-656c-6cxf-hvcv" }, { "reference_url": "https://github.com/pypa/advisory-database/tree/main/vulns/flask-caching/PYSEC-2021-13.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pypa/advisory-database/tree/main/vulns/flask-caching/PYSEC-2021-13.yaml" }, { "reference_url": "https://github.com/sh4nks/flask-caching", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/sh4nks/flask-caching" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33026", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33026" }, { "reference_url": "https://github.com/sh4nks/flask-caching/pull/209", "reference_id": "209", "reference_type": "", "scores": [ { "value": "4.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N" }, { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-07-19T18:22:56Z/" } ], "url": "https://github.com/sh4nks/flask-caching/pull/209" }, { "reference_url": "https://github.com/pallets-eco/flask-caching/pull/209#issuecomment-1136397937", "reference_id": "209#issuecomment-1136397937", "reference_type": "", "scores": [ { "value": "4.2", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N" }, { "value": "9.8", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-07-19T18:22:56Z/" } ], "url": "https://github.com/pallets-eco/flask-caching/pull/209#issuecomment-1136397937" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988916", "reference_id": "988916", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988916" }, { "reference_url": "https://security.archlinux.org/AVG-1957", "reference_id": "AVG-1957", "reference_type": "", "scores": [ { "value": "Medium", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-1957" } ], "fixed_packages": [], "aliases": [ "CVE-2021-33026", "GHSA-656c-6cxf-hvcv" ], "risk_score": 4.4, "exploitability": "0.5", "weighted_severity": "8.8", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-mybf-vfz1-yfgb" } ], "fixing_vulnerabilities": [], "risk_score": "4.4", "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/flask-caching@1.3.0" }