Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions needed to trigger this vulnerability are difficult but may be possible.
https://www.facebook.com/security/advisories/cve-2026-23868
https://sourceforge.net/p/giflib/code/ci/f5b7267aed3665ef025c13823e454170d031c106/tree/gifalloc.c?diff=5146815377b7395944cb683a08c43eee3f631eb7
Source: Mitre, NVD
Published: 2026-03-10
Updated: 2026-03-11
Base Score: 4
Vector: CVSS2#AV:L/AC:H/Au:N/C:N/I:N/A:C
Severity: Medium
Base Score: 5.1
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.00018