https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-05T21:43:23.527908+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2025-0503 CVE-2025-0503 — Leaked User IDs and Metadata of Deleted DMs 2026-10-05T21:43:23.530234+00:00

Affected: Mattermost

Mattermost versions 9.11.x <= 9.11.6 fail to filter out DMs from the deleted channels endpoint which allows an attacker to infer user IDs and other metadata from deleted DMs if someone had manually marked DMs as deleted in the database.