{"id":"CVE-2026-25210","details":"In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.","modified":"2026-08-12T03:51:32.741610882Z","published":"2026-01-30T06:40:27.917Z","related":["CGA-r52h-68xf-497m","SUSE-SU-2026:0386-1","SUSE-SU-2026:0646-1","SUSE-SU-2026:0647-1","SUSE-SU-2026:0826-1","SUSE-SU-2026:20350-1","SUSE-SU-2026:20481-1","SUSE-SU-2026:20627-1","SUSE-SU-2026:20642-1","openSUSE-SU-2026:10144-1","openSUSE-SU-2026:20306-1"],"database_specific":{"cwe_ids":["CWE-190"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25210.json","cna_assigner":"mitre"},"references":[{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-253495.html"},{"type":"WEB","url":"https://github.com/libexpat/libexpat/pull/1075/commits/9c2d990389e6abe2e44527eeaa8b39f16fe859c7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25210.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25210"},{"type":"FIX","url":"https://github.com/libexpat/libexpat/pull/1075"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libexpat/libexpat","events":[{"introduced":"0"},{"fixed":"f5c2890d8ff91f88a018173d293a9bd02f76389e"}],"database_specific":{"cpe":"cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.7.4"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["R_2_7_3","R_2_7_2","R_2_7_1","R_2_7_0","R_2_6_4","R_2_6_3","R_2_6_2","R_2_6_1","R_2_6_0","R_2_5_0","R_2_4_9","R_2_4_8","R_2_4_7","R_2_4_6","R_2_4_5","R_2_4_4","R_2_4_3","R_2_4_2","R_2_4_1","R_2_4_0","R_2_3_0","R_2_2_10","R_2_2_9","R_2_2_8","R_2_2_7","R_2_2_6","R_2_2_5","R_2_2_4","R_2_2_3","R_2_2_2","R_2_2_1","R_2_2_0","R_2_1_1","R_2_1_0","R_2_0_1","R_2_0_0","R_1_95_8","R_1_95_7","R_1_95_6","R_1_95_5","R_1_95_4","R_1_95_3","R_1_95_2","R_1_95_0","libexpat-alpha-1","start","sourceforge_init","jclark-orig","V20000512","V19991013","V19990728","V19990709","V19990626","V1_1","V19990425","V1990307","V19990109","V19981231","V19981122","V1_0","beta4","beta3","beta2","REC1_0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25210.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"}]}