RCE in Azuracast
CVE-2026-100857
AzuraCast before 0.23.4 contains a code injection vulnerability in the ConfigWriter::cleanUpString() method that fails to sanitize Liquidsoap string interpolation sequences, allowing authenticated users with Media or Profile permissions to inject arbitrary Liquidsoap code into station configuration. Attackers can inject #{process.run()} expressions into playlist URLs or station metadata fields that execute shell commands as the azuracast user when the station restarts.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (37.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.0% 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
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-93fx-5qgc-wr38) (vendor-advisory)
- VulnCheck Advisory: AzuraCast before 0.23.4 Remote Code Execution via Liquidsoap string interpolation (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100857?
- CVE-2026-100857 is a high-severity vulnerability in Azuracast, classified under Code Injection. CVSS score: 8.0/10. Published 2026-09-27.
- How severe is CVE-2026-100857?
- High severity. CVSS v3 base score is 8.0 out of 10.