Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/59520?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/59520?format=api", "vulnerability_id": "VCID-ab8v-3vdh-a7gy", "summary": "A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.", "aliases": [ { "alias": "CVE-2021-3502" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/189064?format=api", "purl": "pkg:alpm/archlinux/avahi@0.8%2B22%2Bgfd482a7-1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/avahi@0.8%252B22%252Bgfd482a7-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/88725?format=api", "purl": "pkg:deb/debian/avahi@0.8-5%2Bdeb11u1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/avahi@0.8-5%252Bdeb11u1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/88711?format=api", "purl": "pkg:deb/debian/avahi@0.8-5%2Bdeb11u2?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-be9g-jekm-hqe7" }, { "vulnerability": "VCID-ehnk-9bpb-a3bn" }, { "vulnerability": "VCID-v97n-z9h3-xyfs" }, { "vulnerability": "VCID-wztc-a3ye-cbfe" }, { "vulnerability": "VCID-xc4g-yv34-8fbv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/avahi@0.8-5%252Bdeb11u2%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/88724?format=api", "purl": "pkg:deb/debian/avahi@0.8-6?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/avahi@0.8-6%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/88709?format=api", "purl": "pkg:deb/debian/avahi@0.8-10%2Bdeb12u1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-be9g-jekm-hqe7" }, { "vulnerability": "VCID-ehnk-9bpb-a3bn" }, { "vulnerability": "VCID-v97n-z9h3-xyfs" }, { "vulnerability": "VCID-wztc-a3ye-cbfe" }, { "vulnerability": "VCID-xc4g-yv34-8fbv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/avahi@0.8-10%252Bdeb12u1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/88713?format=api", "purl": "pkg:deb/debian/avahi@0.8-16?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-be9g-jekm-hqe7" }, { "vulnerability": "VCID-ehnk-9bpb-a3bn" }, { "vulnerability": "VCID-v97n-z9h3-xyfs" }, { "vulnerability": "VCID-wztc-a3ye-cbfe" }, { "vulnerability": "VCID-xc4g-yv34-8fbv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/avahi@0.8-16%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/88712?format=api", "purl": "pkg:deb/debian/avahi@0.8-18?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/avahi@0.8-18%3Fdistro=trixie" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/189063?format=api", "purl": "pkg:alpm/archlinux/avahi@0.8%2B20%2Bgd1e71b3-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ab8v-3vdh-a7gy" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/avahi@0.8%252B20%252Bgd1e71b3-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/132654?format=api", "purl": "pkg:rpm/redhat/avahi@0.8-15?arch=el9", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ab8v-3vdh-a7gy" }, { "vulnerability": "VCID-nac4-671z-pygr" }, { "vulnerability": "VCID-w3pq-ah78-3qec" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:rpm/redhat/avahi@0.8-15%3Farch=el9" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3502.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3502.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3502", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00032", "scoring_system": "epss", "scoring_elements": "0.09631", "published_at": "2026-06-04T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3502" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1946914", "reference_id": "1946914", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1946914" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986018", "reference_id": "986018", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986018" }, { "reference_url": "https://security.archlinux.org/AVG-2341", "reference_id": "AVG-2341", "reference_type": "", "scores": [ { "value": "Low", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-2341" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2023:6707", "reference_id": "RHSA-2023:6707", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2023:6707" } ], "weaknesses": [ { "cwe_id": 617, "name": "Reachable Assertion", "description": "The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary." }, { "cwe_id": 476, "name": "NULL Pointer Dereference", "description": "A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit." } ], "exploits": [], "severity_range_score": "0.1 - 5.5", "exploitability": "0.5", "weighted_severity": "5.0", "risk_score": 2.5, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-ab8v-3vdh-a7gy" }