CVE-2026-8075

mediumCVSS 6.5covered by 1 sourcefirst seen 2026-07-17

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

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Exploitation outlook

Low exploitation risk0.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-8075: Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking …nvd · 2026-07-17

External references

NVD record for CVE-2026-8075

CVE.org record

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