CVE-2026-100857 AzuraCast before 0.23.4 Remote Code Execution via Liquidsoap string interpolation
Authenticated users can inject Liquidsoap code to execute arbitrary shell commands on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-100857?
CVE-2026-100857 is a high-severity code injection vulnerability in AzuraCast, published on 27 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-94
Which versions are affected by CVE-2026-100857?
2 open source packages ship an affected version, including azuracast/azuracast.
| Package | Affected | Fixed in |
|---|---|---|
azuracast/azuracast Packagist | All versions | 0.23.4 |
azuracast/azuracast Packagist | All versions | 0.23.4 |
How do I fix CVE-2026-100857?
Upgrade azuracast/azuracast to 0.23.4 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-100857 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100857 exists.
Sources
Also known as GHSA-64wj-2chj-3r96, GHSA-93fx-5qgc-wr38.