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Nextcloud: Deck app: Invalid tag color is accepted by API and breaks frontend UI

🗓️ 02 Jan 2026 21:00:44Reported by khoofType 
hackerone
 hackerone
🔗 hackerone.com👁 5 Views

Invalid tag color in Nextcloud Deck app API causes persistent DoS of the tags feature.

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20 Oct 2026 12:55Current
5.8Medium risk
Vulners AI Score5.8
5