CVE-2026-69114

Spacebar Server before commit 8d126f4 contains a cross-channel message deletion vulnerability in the single-delete and bulk-delete message handlers that fail to scope message queries to the requested channel. Authenticated users with MANAGE_MESSAGES permission in any controlled channel can delete arbitrary messages in other channels by routing delete requests through their own channel.

Score

CVSS 4.0 7.1 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-08-10

Last modified

2026-09-17

Weaknesses

CWE-639

Affected products

• Spacebar Server (Spacebar Server)

References

• https://github.com/spacebarchat/server/commit/8d126f401914d68fa8a97f7e5986dcfcc42de9a8
• https://github.com/spacebarchat/server/issues/1685
• https://github.com/spacebarchat/server/security/advisories/GHSA-62g6-28hv-h6hc
• https://www.vulncheck.com/advisories/spacebar-server-cross-channel-message-deletion-via-permission-check-bypass