Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash…

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Jul 17, 2026 · NIST NVD

   Detected

   Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those headers. Mattermost Advisory ID: MMSA-2026-00668

2. Oct 15, 2026 · NIST NVD

   Updated

   Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those headers. Mattermost Advisory ID: MMSA-2026-00668

Affected

• cpe mattermost/mattermost desktopversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-8075

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-8075

  30-day exploitation probability 0.4%

  first.org
• NIST NVDVulnerability recordCVE-2026-8075

  Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those

  nvd.nist.gov

References

• Vendor Advisory · mattermost.com