Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/392252?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/392252?format=api", "purl": "pkg:apk/alpine/synapse@1.33.2-r0?arch=x86_64&distroversion=v3.15&reponame=community", "type": "apk", "namespace": "alpine", "name": "synapse", "version": "1.33.2-r0", "qualifiers": { "arch": "x86_64", "distroversion": "v3.15", "reponame": "community" }, "subpath": "", "is_vulnerable": false, "next_non_vulnerable_version": "1.41.1-r0", "latest_non_vulnerable_version": "1.41.1-r0", "affected_by_vulnerabilities": [], "fixing_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/35795?format=api", "vulnerability_id": "VCID-b461-xbt2-9fg1", "summary": "Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 \"Push rules\" can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.", "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-29471", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00337", "scoring_system": "epss", "scoring_elements": "0.5683", "published_at": "2026-06-05T12:55:00Z" }, { "value": "0.00337", "scoring_system": "epss", "scoring_elements": "0.56779", "published_at": "2026-06-04T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-29471" }, { "reference_url": "https://github.com/matrix-org/synapse", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/matrix-org/synapse" }, { "reference_url": "https://github.com/matrix-org/synapse/commit/03318a766cac9f8b053db2214d9c332a977d226c", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/matrix-org/synapse/commit/03318a766cac9f8b053db2214d9c332a977d226c" }, { "reference_url": "https://github.com/matrix-org/synapse/releases/tag/v1.33.2", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/matrix-org/synapse/releases/tag/v1.33.2" }, { "reference_url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-x345-32rc-8h85", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-x345-32rc-8h85" }, { "reference_url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2021-135.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2021-135.yaml" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY" }, { "reference_url": "https://security.archlinux.org/ASA-202105-19", "reference_id": "ASA-202105-19", "reference_type": "", "scores": [], "url": "https://security.archlinux.org/ASA-202105-19" }, { "reference_url": "https://security.archlinux.org/AVG-1943", "reference_id": "AVG-1943", "reference_type": "", "scores": [ { "value": "Medium", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-1943" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29471", "reference_id": "CVE-2021-29471", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29471" }, { "reference_url": "https://github.com/advisories/GHSA-x345-32rc-8h85", "reference_id": "GHSA-x345-32rc-8h85", "reference_type": "", "scores": [], "url": "https://github.com/advisories/GHSA-x345-32rc-8h85" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/392252?format=api", "purl": "pkg:apk/alpine/synapse@1.33.2-r0?arch=x86_64&distroversion=v3.15&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/synapse@1.33.2-r0%3Farch=x86_64&distroversion=v3.15&reponame=community" } ], "aliases": [ "CVE-2021-29471", "GHSA-x345-32rc-8h85", "PYSEC-2021-135" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-b461-xbt2-9fg1" } ], "risk_score": null, "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/synapse@1.33.2-r0%3Farch=x86_64&distroversion=v3.15&reponame=community" }