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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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
- 7.1 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.28% probability · 20th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Source
- disclosure@vulncheck.com
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
- https://github.com/spacebarchat/server/security/advisories/GHSA-62g6-28hv-h6hc
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.