Quick answers
- Is CVE-2026-18306 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18306 being exploited in the wild.
- How severe is CVE-2026-18306?
- High severity, with a CVSS score of 7.8, published 20 August 2026.
- Which products and versions are affected?
- GIMP GIMP.
- Is there a fix for CVE-2026-18306?
- A patch was published on 2026-07-29: GIMP issued update; fix available at gitlab.gnome.org/GNOME/gimp/-/commit/76531da9732f38566e5fd8f8f80c837158511ae5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-18306 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-18306?
- Check whether you run Gimp. 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
An integer overflow vulnerability exists in GIMP's SGI file parser due to insufficient validation of user-supplied data before memory operations. The vulnerability is triggered when parsing a malicious SGI file, allowing an integer overflow to occur prior to a write operation. Exploitation requires user interaction—the target must open a crafted SGI image file or visit a malicious page hosting the file. A successful exploit executes arbitrary code within the context of the GIMP process with the privileges of the running user. GIMP has released a patch available on their GitLab repository.
Affected products
- GIMP GIMP
Timeline
- 2026-04-17: disclosed: Vulnerability reported to vendor
- 2026-07-29: advisory: Coordinated public release of advisory
- 2026-07-29: patched: GIMP issued update; fix available at gitlab.gnome.org/GNOME/gimp/-/commit/76531da9732f38566e5fd8f8f80c837158511ae5