CVE-2026-6694 Gimp: gimp file-png plugin: denial of service via oversized apng trns chunk
A remote attacker can cause a denial of service in GIMP by providing a malicious APNG image with an oversized tRNS chunk, crashing the PNG plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-6694?
CVE-2026-6694 is a medium-severity denial of service vulnerability in Redhat Enterprise Linux, published on 3 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-120
Which versions are affected by CVE-2026-6694?
It affects 1 product.
Products include Redhat Enterprise Linux.
How do I fix CVE-2026-6694?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-6694 being exploited?
There is no known exploitation of CVE-2026-6694 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2018-14667 Red Hat JBoss RichFaces Framework Expression Language Injection
- CVE-2021-20325 Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit
- CVE-2018-25011 Memory corruption in libwebp
- CVE-2018-25014 Other in libwebp
- CVE-2014-3585 Supply chain in redhat-upgrade-tool
Sources
Also known as DEBIAN-CVE-2026-6694, GHSA-qv8f-fvhh-gfqp, UBUNTU-CVE-2026-6694.