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Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to prevent Wrangler posts from triggering AI responses. This vulnerability allows users without access to the AI bot to activate it by attaching the activate_ai override property to a post via the Wrangler plugin, provided both the AI and Wrangler plugins are enabled.
Reserved 2025-04-08 | Published 2025-04-16 | Updated 2025-04-16 | Assigner MattermostCWE-863: Incorrect Authorization
Juho Forsén
mattermost.com/security-updates
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