https://db.gcve.eu/rss/recent/all/10 Most recent entries from all 2026-09-30T17:05:55.243028+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent entries. https://db.gcve.eu/vuln/cve-2026-86349 CVE-2026-86349 — Mattermost Server Algorithmic DoS via Unbounded Markdown Block Nesting 2026-09-30T17:05:55.244599+00:00

Affected: Mattermost

Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.8, 10.11.x <= 10.11.22 fail to limit the nesting depth in the server-side Markdown parser which allows an authenticated attacker to cause a denial of service (CPU resource exhaustion) via a crafted post containing deeply nested blockquotes or list items.. Mattermost Advisory ID: MMSA-2026-00707