{"id":"CVE-2026-113351","published":"2026-10-20T11:17:19.363","lastModified":"2026-10-20T20:06:37.150","description":"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.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-909"],"vendors":[],"products":[],"references":[{"url":"https://github.com/libexpat/libexpat","tags":[]},{"url":"https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L1560","tags":[]},{"url":"https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L860-L884","tags":[]},{"url":"https://github.com/libexpat/libexpat/pull/1431","tags":[]},{"url":"https://www.vulncheck.com/advisories/libexpat-2.7.2-through-2.9.0-denial-of-service-via-xml-parserreset","tags":[]}],"exploitRefs":[{"url":"https://github.com/libexpat/libexpat","tags":[]},{"url":"https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L1560","tags":[]},{"url":"https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L860-L884","tags":[]},{"url":"https://github.com/libexpat/libexpat/pull/1431","tags":[]}],"hasPoc":true,"ai":null}