Auth bypass in Spacebar Server
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Spacebar Server — versions 0
Weakness classification (CWE)
References
- github.com/spacebarchat/server/security/advisories/GHSA-62g6-28hv-h6hc (vendor-advisory, exploit)
- github.com/spacebarchat/server/issues/1685 (issue-tracking, technical-description, exploit)
- github.com/spacebarchat/server/commit/8d126f401914d68fa8a97f7e5986dcfcc42de9a8 (patch)
- www.vulncheck.com/advisories/spacebar-server-cross-channel-message-deletion-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-69114?
- CVE-2026-69114 is a medium-severity vulnerability in Spacebar Server, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-08-10.
- How severe is CVE-2026-69114?
- Medium severity. CVSS v3 base score is 6.5 out of 10.