# CVE-2026-82343: GIMP file-psd plugin out-of-bounds access in channel validation

Source: https://junglewise.ai/threats/cve-2026-82343-gimp-file-psd-plugin-out-of-bounds-access-in-channel-validation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-28. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-82343 · Severity: medium · CVSS 6.1 · Published 2026-08-28

GIMP is a widely-used open-source image editor. A flaw in its PSD (Photoshop) file import plugin allows an attacker to craft a malicious image file that crashes the application when opened, causing denial of service. The vulnerability could also leak small amounts of sensitive memory contents from the affected user's system.

Technologies: [Gimp](https://junglewise.ai/threats/technologies/gimp). Vendors: [Gimp](https://junglewise.ai/threats/vendors/gimp).

## Quick answers

**Is CVE-2026-82343 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82343 being exploited in the wild.

**How severe is CVE-2026-82343?** Medium severity, with a CVSS score of 6.1, published 28 August 2026.

**Which products and versions are affected?** Gimp <UNKNOWN>.

**Is there a fix for CVE-2026-82343?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-82343 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-82343?** Check whether you run Gimp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The file-psd plugin in GIMP fails to properly validate the channel-count parameter when parsing specially crafted PSD image files. This insufficient validation leads to improper memory bounds checking, resulting in both a heap out-of-bounds read and a stack out-of-bounds access. An attacker can exploit this by distributing a malicious PSD file; when a user opens it in GIMP, the plugin will crash or leak memory contents. The vulnerability requires user interaction (opening a malicious file) and is network-reachable if files are downloaded or received via email. A patch should be available from GIMP maintainers.

## Affected products

- GIMP GIMP <UNKNOWN>

## Timeline

- 2026-08-28: disclosed

## References

- [https://gitlab.gnome.org/GNOME/gimp](https://gitlab.gnome.org/GNOME/gimp)
- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)

## Related threats

- [GIMP use-after-free in XCF path loader](https://junglewise.ai/threats/cve-2026-112261-a-flaw-was-found-in-gimp-opening-a-crafted-xcf-that-selects-a)
- [GIMP use-after-free in XCF loader](https://junglewise.ai/threats/cve-2026-112258-a-flaw-was-found-in-gimp-the-xcf-loader-can-leave-a-dangling)
- [GIMP integer overflow in file-pvr plug-in](https://junglewise.ai/threats/cve-2026-62439-a-flaw-was-found-in-gimp-an-integer-overflow-occurs-in-the-file)
- [GIMP heap buffer overflow in raw data export](https://junglewise.ai/threats/cve-2026-106066-a-heap-based-buffer-overflow-was-found-in-gimp-s-raw-data-export)
- [GIMP heap buffer overflow in GIF export](https://junglewise.ai/threats/cve-2026-106064-a-heap-based-buffer-overflow-was-found-in-gimp-s-gif-export-plug)