GIMP LBM File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

March 16th, 2026
ZDI-26-213 ZDI-CAN-28405

CVE ID

CVE-2026-2046

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

GIMP

Affected Products

GIMP

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of LBM files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

GIMP has issued an update to correct this vulnerability. More details can be found at:
https://gitlab.gnome.org/GNOME/gimp/-/commit/b4d41182dde4a1f98431b4d5b749a5a18bed0ab3

Disclosure Timeline

  • 2025-11-11 - Vulnerability reported to vendor
  • 2026-03-16 - Coordinated public release of advisory
  • 2026-03-16 - Advisory Updated

Credit

Anonymous

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