{"id":"CVE-2026-113351","summary":"libexpat 2.7.2 through 2.9.0 Denial of Service via XML_ParserReset","details":"libexpat 2.7.2 through 2.9.0 contains a denial of service vulnerability because XML_ParserReset zeroes the direct byte count but never offsets tracked heap allocations. Attackers can submit a large XML document so later documents on the same reset parser fail with XML_ERROR_NO_MEMORY until it is recreated.","modified":"2026-10-21T02:55:52.759264252Z","published":"2026-10-20T10:41:37.468Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-909"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113351.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113351.json"},{"type":"PACKAGE","url":"https://github.com/libexpat/libexpat"},{"type":"ARTICLE","url":"https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L1560"},{"type":"ARTICLE","url":"https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L860-L884"},{"type":"FIX","url":"https://github.com/libexpat/libexpat/pull/1431"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113351"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/libexpat-2.7.2-through-2.9.0-denial-of-service-via-xml-parserreset"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libexpat/libexpat","events":[{"introduced":"7643f96bd5b9f5d3b26ea112519e05e17ef91cfb"},{"last_affected":"a76b1174c1ea52abb639a4c69d52b630a8a106a2"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"2.7.2"},{"last_affected":"2.9.0"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}}],"versions":["R_2_9_0","R_2_8_5","R_2_8_4","R_2_8_3","R_2_8_2","R_2_8_1","R_2_8_0","R_2_7_5","R_2_7_4","R_2_7_3","R_2_7_2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113351.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}