What is CVE-2026-40918?

CVE-2026-40918 is a medium-severity vulnerability in Gimp, classified under Incorrect Calculation of Buffer Size. CVSS score: 5.5/10. Published 2026-04-15.

How severe is CVE-2026-40918?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Gimp

CVE-2026-40918

A flaw was found in GIMP. Processing a specially crafted PVR image file with large dimensions can lead to a denial of service (DoS). This occurs due to a stack-based buffer overflow and an out-of-bounds read in the PVR image loader, causing the application to crash. Systems that process untrusted PVR image files are affected.

Published 2026-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (15.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Gimp
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0

Weakness classification (CWE)

CWE-131 — Incorrect Calculation of Buffer Size

References

access.redhat.com/security/cve/CVE-2026-40918 (vdb-entry, Vendor Advisory)
bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40918?: CVE-2026-40918 is a medium-severity vulnerability in Gimp, classified under Incorrect Calculation of Buffer Size. CVSS score: 5.5/10. Published 2026-04-15.
How severe is CVE-2026-40918?: Medium severity. CVSS v3 base score is 5.5 out of 10.