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CVE-2026-8075

Posting a malicious markdown image crashes the Mattermost Desktop App PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Mattermost / Mattermostaffected 0 through 5.5.13; affected 0 through 6.0.2; unaffected 6.3.0; unaffected 5.13.6.0; unaffected 6.2.1.0

CWE

CWE-754

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.