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No exploitation reportedAwaiting NVD analysis

CVE-2026-18090

Gdk-pixbuf: gdk-pixbuf: heap out-of-bounds read in uncompress() via crafted icns rle block

No exploitation reported by the sources we read.

  • Published2026-09-08
  • WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Timeline

dates in UTC
  1. 2026-09-0823:02CVE publishedCNA

Versions per branch

Products declared by the CNA15 products

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

9 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-06

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • gdk-pixbufUbuntu:Pro:20.04:LTSall versions · no fixed version listed
  • gdk-pixbufUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • gdk-pixbufUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • gdk-pixbufUbuntu:26.10all versions · no fixed version listed
  • gdk-pixbufUbuntu:26.04:LTSall versions · no fixed version listed
  • gdk-pixbufUbuntu:24.04:LTSall versions · no fixed version listed
  • gdk-pixbufUbuntu:22.04:LTSall versions · no fixed version listed
  • gdk-pixbufEchoall versions · fixed in 2.42.12+dfsg-4+e6

4 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-18090 Red Hat Product Security

    gdk-pixbuf: gdk-pixbuf: heap out-of-bounds read in uncompress() via crafted ICNS RLE block

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Published
2026-09-08
Last Modified
2026-11-06
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-wjgf-rg4p-gj99

Frequently asked questions

What is CVE-2026-18090?

A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent memory.

Is CVE-2026-18090 actively exploited?

Active exploitation of CVE-2026-18090 has not been confirmed. Its EPSS score was 0.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-18090?

CVE-2026-18090 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.

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