Auth bypass in Azuracast
CVE-2026-100854
AzuraCast before 0.23.6 lacks RequireInternalConnection middleware on the Liquidsoap API endpoint and incorrectly derives the AutoDJ flag from header presence rather than validated value. Users with View station permission can inject arbitrary now-playing metadata, disrupt live broadcasts, and disclose filesystem paths.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (9.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-4fm3-ggg2-c6qx) (vendor-advisory)
- VulnCheck Advisory: AzuraCast before 0.23.6 Metadata Injection via Liquidsoap API (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100854?
- CVE-2026-100854 is a medium-severity vulnerability in Azuracast, classified under Missing Authorization. CVSS score: 6.3/10. Published 2026-09-27.
- How severe is CVE-2026-100854?
- Medium severity. CVSS v3 base score is 6.3 out of 10.