Public vulnerability disclosure

CVE-2026-59090

Gimp: gimp: arbitrary code execution in psd plugin due to unsigned underflow

publishedCWE-191

A flaw was found in GIMP's PSD file format plugin. This vulnerability, an unsigned integer underflow in the `block_rem` variable, occurs when a user opens a specially crafted `.psd` image file. The underflow leads to parser confusion, enabling an attacker to inject arbitrary data as layer resource blocks. This can ultimately result in arbitrary code execution, allowing the attacker to run malicious code on the victim's system.

Investigate in Cyber JSON Markdown

Technical severity8.4 highCVSS 3.1 · CNA: redhat

Published2026-08-10Source updated 2026-11-02

Collected2026-11-022 attributed sources

Fixes and workarounds

Workaround

To mitigate this vulnerability, users should avoid opening untrusted or suspicious PSD image files with GIMP. As a general security practice, it is recommended to only process image files from trusted sources.

Source: CNA: redhat

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
`gimp` https://gitlab.gnome.org/GNOME/gimp	3.3.1 (affected)	CNA: redhat
Red Hat Enterprise Linux 9 Red Hat `gimp` https://access.redhat.com/downloads/content/package-browser/	≥ 2:3.0.4-4.el9_8.10; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat `gimp` https://access.redhat.com/downloads/content/package-browser/	≥ 2:2.99.8-4.el9_2.7; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Red Hat `gimp` https://access.redhat.com/downloads/content/package-browser/	≥ 2:2.99.8-4.el9_4.19; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.6 Extended Update Support Red Hat `gimp` https://access.redhat.com/downloads/content/package-browser/	≥ 2:2.99.8-4.el9_6.20; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 6 Red Hat `gimp` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unknown	CNA: redhat
Red Hat Enterprise Linux 7 Red Hat `gimp` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8 Red Hat `gimp` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 8.4 high	`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H`	CNA: redhat

Exploit evidence

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16509
exploit · ADP: CISA-ADP

References

https://access.redhat.com/errata/RHSA-2026:61587CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:73768CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:80509CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:93589CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-59090CNA: redhat · vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2496584CNA: redhat · issue-tracking, x_refsource_REDHAT
https://gitlab.gnome.org/GNOME/gimp/-/work_items/16509CNA: redhat
https://gitlab.gnome.org/GNOME/gimp/-/work_items/16509ADP: CISA-ADP · exploit