CVE-2026-26740

Name
CVE-2026-26740
Description
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/security/cve/CVE-2026-26740
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://bugzilla.redhat.com/show_bug.cgi?id=2448747
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26740.json
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33452
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33455
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33456
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33447
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33450
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33451
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33501
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33502
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33503
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:33509
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:36004
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:36005
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:36006
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:9683
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:9686
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:9689
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:9693

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:giflib_project:giflib:5.2.2:*:*:*:*:*:*:* giflib == None == 5.2.2

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
giflib edge-main 5.2.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib edge-main 5.2.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib 3.24-main 5.2.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib 3.23-main 5.2.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib 3.22-main 5.2.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib 3.22-main 5.2.2-r0 None possibly vulnerable
giflib 3.21-main 5.2.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib 3.21-main 5.2.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib 3.20-main 5.2.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
giflib 3.19-main 5.2.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable