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Fencer Vulns
medium 5.5

CVE-2026-6694 json

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

published 2026-08-03 3 mo ago modified 2026-11-05 3 d ago also EUVD-2026-52150

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits
0
none known

Summary

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.

Patch / fix

  • gimp Debian 14 3.2.4-1

debian advisories DEBIAN-CVE-2026-6694

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-6694 updated cvss 5.5

gimp: GIMP file-png plugin: Denial of Service via oversized APNG tRNS chunk

  • Red Hat Enterprise Linux 6 gimp, gimp-libs, gimp-devel-tools, gimp-help-browser Red Hat Enterprise Linux 7 gimp, gimp-libs, gimp-devel-tools Red Hat Enterprise Linux 8 gimp, pygtk2, gimp-libs, pygobject2, python2-cairo, pygtk2-codegen, +3 more Red Hat Enterprise Linux 9 gimp, gimp-libs
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.