Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/351543?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/351543?format=api", "vulnerability_id": "VCID-4nzu-3a6y-jqab", "summary": "", "aliases": [ { "alias": "CVE-2026-34477" }, { "alias": "GHSA-6hg6-v5c8-fphq" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/1062441?format=api", "purl": "pkg:deb/debian/apache-log4j2@0?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache-log4j2@0%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/583999?format=api", "purl": "pkg:deb/debian/apache-log4j2@2.17.1-1~deb11u1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache-log4j2@2.17.1-1~deb11u1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/584000?format=api", "purl": "pkg:deb/debian/apache-log4j2@2.19.0-2?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-gcyx-fdns-k3bt" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache-log4j2@2.19.0-2%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/1060903?format=api", "purl": "pkg:maven/org.apache.logging.log4j/log4j-core@2.25.4", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.logging.log4j/log4j-core@2.25.4" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/205222?format=api", "purl": "pkg:maven/org.apache.logging.log4j/log4j-core@2.12.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-4nzu-3a6y-jqab" }, { "vulnerability": "VCID-gcyx-fdns-k3bt" }, { "vulnerability": "VCID-mz9r-j78c-dfe3" }, { "vulnerability": "VCID-r67p-yqg2-9bbq" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.logging.log4j/log4j-core@2.12.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/1062990?format=api", "purl": "pkg:maven/org.apache.logging.log4j/log4j-core@3.0.0-alpha1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-4nzu-3a6y-jqab" }, { "vulnerability": "VCID-hhc8-3wd3-4bh5" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.logging.log4j/log4j-core@3.0.0-alpha1" }, { "url": "http://public2.vulnerablecode.io/api/packages/1060904?format=api", "purl": "pkg:maven/org.apache.logging.log4j/log4j-core@3.0.0-beta3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-4nzu-3a6y-jqab" }, { "vulnerability": "VCID-hhc8-3wd3-4bh5" }, { "vulnerability": "VCID-s9nz-6x8z-ykgz" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.logging.log4j/log4j-core@3.0.0-beta3" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-34477.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.8", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-34477.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-34477", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28373", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00108", "scoring_system": "epss", "scoring_elements": "0.29136", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00108", "scoring_system": "epss", "scoring_elements": "0.29182", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00108", "scoring_system": "epss", "scoring_elements": "0.29084", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00143", "scoring_system": "epss", "scoring_elements": "0.34541", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00143", "scoring_system": "epss", "scoring_elements": "0.33897", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00143", "scoring_system": "epss", "scoring_elements": "0.34021", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00143", "scoring_system": "epss", "scoring_elements": "0.34107", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00143", "scoring_system": "epss", "scoring_elements": "0.34128", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00143", "scoring_system": "epss", "scoring_elements": "0.34503", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00143", "scoring_system": "epss", "scoring_elements": "0.34556", "published_at": "2026-04-16T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-34477" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/apache/logging-log4j2", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/apache/logging-log4j2" }, { "reference_url": "https://logging.apache.org/cyclonedx/vdr.xml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "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/2026-04-10T17:36:46Z/" } ], "url": "https://logging.apache.org/cyclonedx/vdr.xml" }, { "reference_url": "https://logging.apache.org/log4j/2.x/manual/appenders/network.html#SslConfiguration-attr-verifyHostName", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "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/2026-04-10T17:36:46Z/" } ], "url": "https://logging.apache.org/log4j/2.x/manual/appenders/network.html#SslConfiguration-attr-verifyHostName" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34477", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34477" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457319", "reference_id": "2457319", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457319" }, { "reference_url": "https://github.com/apache/logging-log4j2/pull/4075", "reference_id": "4075", "reference_type": "", "scores": [ { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "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/2026-04-10T17:36:46Z/" } ], "url": "https://github.com/apache/logging-log4j2/pull/4075" }, { "reference_url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:*", "reference_id": "cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:*", "reference_type": "", "scores": [], "url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:*" }, { "reference_url": "https://github.com/advisories/GHSA-6hg6-v5c8-fphq", "reference_id": "GHSA-6hg6-v5c8-fphq", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-6hg6-v5c8-fphq" }, { "reference_url": "https://lists.apache.org/thread/lkx8cl46t2bvkcwfcb2pd43ygc097lq4", "reference_id": "lkx8cl46t2bvkcwfcb2pd43ygc097lq4", "reference_type": "", "scores": [ { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "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/2026-04-10T17:36:46Z/" } ], "url": "https://lists.apache.org/thread/lkx8cl46t2bvkcwfcb2pd43ygc097lq4" }, { "reference_url": "https://logging.apache.org/security.html#CVE-2026-34477", "reference_id": "security.html#CVE-2026-34477", "reference_type": "", "scores": [ { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "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/2026-04-10T17:36:46Z/" } ], "url": "https://logging.apache.org/security.html#CVE-2026-34477" } ], "weaknesses": [ { "cwe_id": 297, "name": "Improper Validation of Certificate with Host Mismatch", "description": "The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actually associated with that host." }, { "cwe_id": 295, "name": "Improper Certificate Validation", "description": "The product does not validate, or incorrectly validates, a certificate." } ], "exploits": [], "severity_range_score": "4.0 - 6.9", "exploitability": "0.5", "weighted_severity": "6.2", "risk_score": 3.1, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-4nzu-3a6y-jqab" }