Spacebar Server Cross-Channel Message Deletion via Permission Check Bypass
18Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1
exploitation probability
—
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
Spacebar Server · Spacebar ServerReferences
https://github.com/spacebarchat/server/commit/8d126f401914d68fa8a97f7e5986dcfcc42de9a8https://github.com/spacebarchat/server/issues/1685https://github.com/spacebarchat/server/security/advisories/GHSA-62g6-28hv-h6hchttps://www.vulncheck.com/advisories/spacebar-server-cross-channel-message-deletion-via-permission-check-bypass