CVE-2026-26740
8.2
HIGH
CVSS 3.1
EPSS 0.21%
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.
How to fix CVE-2026-26740
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/giflib—no fix listed
Is CVE-2026-26740 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |