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Vulnerability · Published Aug 28, 2026 · Assigned by redhat

CVE-2026-82343Gimp: heap out-of-bounds read and stack out-of-bounds access in psd loader from channel-count handling

Medium 6.1

In plain English

A medium-severity buffer overflow in GIMP from GNOME. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 92.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in the file-psd plugin in GIMP. When processing a specially crafted PSD image file, the plugin does not properly validate the channel-count parameter. This incorrect validation leads to improper memory bounds checking, resulting in both a heap out-of-bounds read and a stack out-of-bounds access. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of memory contents.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12gimpno fix listedDEBIAN-CVE-2026-82343
Debian:13gimpno fix listedDEBIAN-CVE-2026-82343
Debian:14gimp3.2.6-1DEBIAN-CVE-2026-82343
Ubuntu:26.04:LTSgimpno fix listedUBUNTU-CVE-2026-82343
Ubuntu:26.10gimpno fix listedUBUNTU-CVE-2026-82343

Affected products (as reported)

VendorProductVersions
GNOME GIMP see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References