Quick answers
- Is CVE-2026-48929 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-48929 being exploited in the wild.
- How severe is CVE-2026-48929?
- High severity, with a CVSS score of 7.5, published 17 June 2026.
- Which products and versions are affected?
- Rocket.Chat <8.5.1, <8.4.4, <8.3.6, <8.2.6, <8.1.6, <8.0.7, <7.13.9, <7.10.13.
- Is there a fix for CVE-2026-48929?
- A patch was published on 2026-06-11: Fix merged into develop branch via PR 40889 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-48929 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-48929?
- Check whether you run Rocket.Chat at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
Rocket.Chat is vulnerable to unauthenticated file deletion due to an improper authentication check in the 'deleteFileMessage' Meteor method. When the method is invoked via an unauthenticated DDP WebSocket connection, 'Meteor.userId()' returns null, which inadvertently causes the authorization logic to be bypassed. The execution then proceeds to 'FileUpload.getStore('Uploads').deleteById(fileID)', resulting in the unconditional removal of the file from both storage and the database. Attackers can discover target file IDs through public channel message payloads or download URLs. The vulnerability is fixed 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.
Affected products
- Rocket.Chat Rocket.Chat <8.5.1, <8.4.4, <8.3.6, <8.2.6, <8.1.6, <8.0.7, <7.13.9, <7.10.13
Timeline
- 2026-06-11: patched: Fix merged into develop branch via PR 40889
- 2026-06-17: disclosed: Vulnerability published to NVD