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// vulnerability record
cached · NVD via COSMOS syncCVE-2026-16049
MEDIUMpublished 2026-08-17 15:16 UTC · 18 hours ago · modified 2026-08-17 16:16 UTC
4.3
CVSS / 10
// description
Mattermost Plugins versions <=11.8 10.20.11 11.5.7.0 _The Mattermost GitLab plugin fails to verify channel permissions when processing API requests with a caller-supplied_ {{post_id}}_, and fails to validate the_ {{web_url}} _parameter against the configured GitLab instance, which allows an authenticated attacker to inject bot-authored messages containing arbitrary URLs into channels they do not have access to via the_ {{createIssue}} _and_ {{attachCommentToIssue}} _API endpoints._ Mattermost Advisory ID: MMSA-2026-00673
// weaknesses (CWE)
- CWE-862