ANT-2026-QXNF2N9K · rocketchat · Authentication-bypass

auth-bypass high CVE-2026-48929 Severity Claude high · Security research firm high · Maintainer high Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Ophion Security. ANT-2026-QXNF2N9K: Unauthenticated Arbitrary Fil...

CVE-2026-48929: Improper Authentication

Rocket.Chat in versions 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, and 7.10.13 is vulnerable to unauthenticated file deletion. The deleteFileMessage Meteor method permanently deletes any uploaded file by ID without requiring authentication. When called via an unauthenticated DDP WebSocket...

CVE-2026-48929

Rocket.Chat in versions 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, and 7.10.13 is vulnerable to unauthenticated file deletion. The deleteFileMessage Meteor method permanently deletes any uploaded file by ID without requiring authentication. When called via an unauthenticated DDP WebSocket...

Rocket.Chat: Unauthenticated file deletion via deleteFileMessage DDP method allows permanent destruction of any uploaded file

Vulnerability description not provided...