https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 14:27:42 +0000 https://db.gcve.eu/vuln/fkie_cve-2026-10556 <p>Mattermost versions 11.9.x &lt;= 11.9.0, 11.8.x &lt;= 11.8.4, 11.7.x &lt;= 11.7.7, 10.11.x &lt;= 10.11.22 fail to validate null entries in Microsoft Graph webhook notification payloads, which allows an unauthenticated attacker to crash the Microsoft Calendar plugin process and deny calendar integration service to all users on the instance via a crafted {{POST}} request to the public webhook endpoint.. Mattermost Advisory ID: MMSA-2026-00693</p> <p>Mattermost versions 11.9.x &lt;= 11.9.0, 11.8.x &lt;= 11.8.4, 11.7.x &lt;= 11.7.7, 10.11.x &lt;= 10.11.22 fail to validate null entries in Microsoft Graph webhook notification payloads, which allows an unauthenticated attacker to crash the Microsoft Calendar plugin process and deny calendar integration service to all users on the instance via a crafted {{POST}} request to the public webhook endpoint.. Mattermost Advisory ID: MMSA-2026-00693</p> https://db.gcve.eu/vuln/fkie_cve-2026-10556 https://db.gcve.eu/vuln/ghsa-56v5-m3m2-x7qh <p>Mattermost versions 11.9.x &lt;= 11.9.0, 11.8.x &lt;= 11.8.4, 11.7.x &lt;= 11.7.7, 10.11.x &lt;= 10.11.22 fail to validate null entries in Microsoft Graph webhook notification payloads, which allows an unauthenticated attacker to crash the Microsoft Calendar plugin process and deny calendar integration service to all users on the instance via a crafted {{POST}} request to the public webhook endpoint.. Mattermost Advisory ID: MMSA-2026-00693</p> <p>Mattermost versions 11.9.x &lt;= 11.9.0, 11.8.x &lt;= 11.8.4, 11.7.x &lt;= 11.7.7, 10.11.x &lt;= 10.11.22 fail to validate null entries in Microsoft Graph webhook notification payloads, which allows an unauthenticated attacker to crash the Microsoft Calendar plugin process and deny calendar integration service to all users on the instance via a crafted {{POST}} request to the public webhook endpoint.. Mattermost Advisory ID: MMSA-2026-00693</p> https://db.gcve.eu/vuln/ghsa-56v5-m3m2-x7qh