Vulnerability · Published Aug 3, 2026 · Assigned by redhat

CVE-2026-6694Gimp: gimp file-png plugin: denial of service via oversized apng trns chunk

Medium 5.5

In plain English

A medium-severity buffer overflow in Red Hat Enterprise Linux 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.2%top 89.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A flaw was found in GIMP's file-png plugin. A remote attacker can exploit this by crafting a malicious Animated Portable Network Graphics (APNG) image containing an oversized tRNS chunk. This can lead to a stack-based buffer overflow (CWE-121), causing the file-png plugin to crash and resulting in a Denial of Service (DoS) for the user.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:14	gimp	3.2.4-1	DEBIAN-CVE-2026-6694
Ubuntu:26.04:LTS	gimp	no fix listed	UBUNTU-CVE-2026-6694

Affected products (as reported)

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 6	see references
Red Hat	Red Hat Enterprise Linux 7	see references
Red Hat	Red Hat Enterprise Linux 8	see references
Red Hat	Red Hat Enterprise Linux 9	see references

Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

https://access.redhat.com/security/cve/CVE-2026-6694 vdb-entry, x_refsource_REDHAT
RHBZ#2459779 issue-tracking, x_refsource_REDHAT