Most recent entries from all https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 11:34:20 +0000 CVE-2026-25783 — Denial of service via malformed User-Agent header in getBrowserVersion https://vulnerability.circl.lu/vuln/cve-2026-25783 <p><strong>Affected:</strong> Mattermost</p> <p>Mattermost versions 11.3.x &lt;= 11.3.0, 11.2.x &lt;= 11.2.2, 10.11.x &lt;= 10.11.10 fail to properly validate User-Agent header tokens which allows an authenticated attacker to cause a request panic via a specially crafted User-Agent header. Mattermost Advisory ID: MMSA-2026-00586</p> <p><strong>Affected:</strong> Mattermost</p> <p>Mattermost versions 11.3.x &lt;= 11.3.0, 11.2.x &lt;= 11.2.2, 10.11.x &lt;= 10.11.10 fail to properly validate User-Agent header tokens which allows an authenticated attacker to cause a request panic via a specially crafted User-Agent header. Mattermost Advisory ID: MMSA-2026-00586</p> https://vulnerability.circl.lu/vuln/cve-2026-25783