Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/1020422?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/1020422?format=api", "purl": "pkg:maven/org.apache.logging.log4j/log4j-1.2-api@2.12.4", "type": "maven", "namespace": "org.apache.logging.log4j", "name": "log4j-1.2-api", "version": "2.12.4", "qualifiers": {}, "subpath": "", "is_vulnerable": true, "next_non_vulnerable_version": "2.25.4", "latest_non_vulnerable_version": "2.25.4", "affected_by_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/58655?format=api", "vulnerability_id": "VCID-6pf4-qvrk-kugc", "summary": "The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output. Conforming XML parsers are required to reject documents containing such characters with a fatal error, which may cause downstream log processing systems to drop or fail to index affected records. Two groups of users are affected: * Those using Log4j1XmlLayout directly in a Log4j Core 2 configuration file. * Those using the Log4j 1 configuration compatibility layer with org.apache.log4j.xml.XMLLayout specified as the layout class. Users are advised to upgrade to Apache Log4j 1-to-Log4j 2 bridge version 2.25.4, which corrects this issue. Note: The Apache Log4j 1-to-Log4j 2 bridge is deprecated and will not be present in Log4j 3. Users are encouraged to consult the Log4j 1 to Log4j 2 migration guide https://logging.apache.org/log4j/2.x/migrate-from-log4j1.html , and specifically the section on eliminating reliance on the bridge.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-34479.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-34479.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-34479", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00126", "scoring_system": "epss", "scoring_elements": "0.3132", "published_at": "2026-06-09T12:55:00Z" }, { "value": "0.00126", "scoring_system": "epss", "scoring_elements": "0.31401", "published_at": "2026-06-05T12:55:00Z" }, { "value": "0.00126", "scoring_system": "epss", "scoring_elements": "0.31367", "published_at": "2026-06-06T12:55:00Z" }, { "value": "0.00126", "scoring_system": "epss", "scoring_elements": "0.31329", "published_at": "2026-06-07T12:55:00Z" }, { "value": "0.00126", "scoring_system": "epss", "scoring_elements": "0.31296", "published_at": "2026-06-08T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-34479" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-34479", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-34479" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L" } ], "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": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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://github.com/apache/logging-log4j2/pull/4078", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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:Y/T:P/P:M/B:A/M:M/D:T/2026-04-10T17:45:24Z/" } ], "url": "https://github.com/apache/logging-log4j2/pull/4078" }, { "reference_url": "https://lists.apache.org/thread/gd0hp6mj17rn3kj279vgy4p7kd4zz5on", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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:Y/T:P/P:M/B:A/M:M/D:T/2026-04-10T17:45:24Z/" } ], "url": "https://lists.apache.org/thread/gd0hp6mj17rn3kj279vgy4p7kd4zz5on" }, { "reference_url": "https://logging.apache.org/cyclonedx/vdr.xml", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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:Y/T:P/P:M/B:A/M:M/D:T/2026-04-10T17:45:24Z/" } ], "url": "https://logging.apache.org/cyclonedx/vdr.xml" }, { "reference_url": "https://logging.apache.org/log4j/2.x/migrate-from-log4j1.html", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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:Y/T:P/P:M/B:A/M:M/D:T/2026-04-10T17:45:24Z/" } ], "url": "https://logging.apache.org/log4j/2.x/migrate-from-log4j1.html" }, { "reference_url": "https://logging.apache.org/security.html#CVE-2026-34479", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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:Y/T:P/P:M/B:A/M:M/D:T/2026-04-10T17:45:24Z/" } ], "url": "https://logging.apache.org/security.html#CVE-2026-34479" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34479", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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-2026-34479" }, { "reference_url": "http://www.openwall.com/lists/oss-security/2026/04/10/8", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.9", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "http://www.openwall.com/lists/oss-security/2026/04/10/8" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1133848", "reference_id": "1133848", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1133848" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457313", "reference_id": "2457313", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457313" }, { "reference_url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:log4j_1_2_api:*:*:*:*:*:*:*:*", "reference_id": "cpe:2.3:a:apache:log4j_1_2_api:*:*:*:*:*:*:*:*", "reference_type": "", "scores": [], "url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:log4j_1_2_api:*:*:*:*:*:*:*:*" }, { "reference_url": "https://github.com/advisories/GHSA-h383-gmxw-35v2", "reference_id": "GHSA-h383-gmxw-35v2", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-h383-gmxw-35v2" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:21773", "reference_id": "RHSA-2026:21773", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:21773" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/111651?format=api", "purl": "pkg:maven/org.apache.logging.log4j/log4j-1.2-api@2.25.4", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.logging.log4j/log4j-1.2-api@2.25.4" } ], "aliases": [ "CVE-2026-34479", "GHSA-h383-gmxw-35v2" ], "risk_score": 3.1, "exploitability": "0.5", "weighted_severity": "6.2", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-6pf4-qvrk-kugc" } ], "fixing_vulnerabilities": [], "risk_score": "3.1", "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.logging.log4j/log4j-1.2-api@2.12.4" }