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Nextcloud: TaskProcessing callback authorization bypass allows ex-members to post as Assistant Talk Bot

🗓️ 12 Jun 2026 20:36:25Reported by kuninoguType 
hackerone
 hackerone
🔗 hackerone.com👁 12 Views

Authorization bypass in Nextcloud TaskProcessing lets ex-members post as Talk Bot via unverified callback tokens.

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14 Aug 2026 14:50Current
5.5Medium risk
Vulners AI Score5.5
12