Integer Overflow Vulnerability in GIMP Product by GNOME
CVE-2026-18309

7.8HIGH

Key Information:

Vendor

Gimp

Status
Gimp
Vendor
CVE Published:
20 August 2026

What is CVE-2026-18309?

A crucial vulnerability exists in GIMP's handling of APNG files where inadequate validation of user-supplied data can lead to an integer overflow. This flaw allows remote attackers to execute arbitrary code within the context of the affected application, requiring user interaction to trigger the exploit by visiting a malicious page or opening a specially crafted file.

Affected Version(s)

GIMP 3.2.2

References

https://www.zerodayinitiative.com/advisories/ZDI-26-462/
x_research-advisory
https://gitlab.gnome.org/GNOME/gimp/-/commit/c760c8309d18...
vendor-advisory

CVSS V3.0

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.