{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-86137","sourceIdentifier":"cve@mitre.org","published":"2026-09-05T05:17:11.490","lastModified":"2026-09-15T19:46:11.827","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In libxml2 before 2.15.4, xmlFAParsePosCharGroup has an out-of-bounds read, aka an out-of-bounds read in the NXT macro in xmlregexp."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"xmlsoft","product":"libxml2","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.15.4","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"cve@mitre.org","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":2.9,"baseSeverity":"LOW","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":1.4,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":1.8,"impactScore":4.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-14T13:26:45.455597Z","id":"CVE-2026-86137","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"cve@mitre.org","type":"Secondary","description":[{"lang":"en","value":"CWE-125"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*","versionEndExcluding":"2.15.4","matchCriteriaId":"18340BC5-55BB-416E-9928-3754A7AE17F7"}]}]}],"references":[{"url":"https://github.com/GNOME/libxml2/commit/76fe08d97de88bfaef2f7d5cd27f11954cc5bee2","source":"cve@mitre.org","tags":["Patch"]},{"url":"https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4","source":"cve@mitre.org","tags":["Release Notes"]},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1099","source":"cve@mitre.org","tags":["Exploit","Vendor Advisory"]}]}}