Buffer Overflow Vulnerability in GIMP's png Plugin
CVE-2026-6694

5.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Vendor
CVE Published:
3 August 2026

What is CVE-2026-6694?

A vulnerability has been identified in the file-png plugin of GIMP, where a remote attacker can exploit the plugin by submitting a specially crafted Animated Portable Network Graphics (APNG) image. This image includes an oversized tRNS chunk that triggers a stack-based buffer overflow (CWE-121). As a consequence, this vulnerability can cause the file-png plugin to crash, leading to a Denial of Service (DoS) scenario for users.

References

https://access.redhat.com/security/cve/CVE-2026-6694
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2459779
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Bronson Yen (Calif.io) for reporting this issue.
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