{"id":"ALPINE-CVE-2026-26740","details":"Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.","modified":"2026-09-14T16:18:08.137179037Z","published":"2026-03-18T18:16:26.220Z","upstream":["CVE-2026-26740"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-26740"}],"affected":[{"package":{"name":"giflib","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/giflib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.2-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-26740.json"}},{"package":{"name":"giflib","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/giflib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.2-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-26740.json"}},{"package":{"name":"giflib","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/giflib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.2-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-26740.json"}},{"package":{"name":"giflib","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/giflib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.2-r2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-26740.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}