# CVE-2026-100857: AzuraCast code injection in ConfigWriter via Liquidsoap string interpolation

Source: https://junglewise.ai/threats/cve-2026-100857-azuracast-before-0-23-4-contains-a-code-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-27. Updated: 2026-09-27  
License: CC BY 4.0 with a link back

CVE-2026-100857 · Severity: high · CVSS 8 · Published 2026-09-27

AzuraCast is a web-based radio station management and streaming software. The vulnerability allows authenticated users with media or profile management permissions to inject malicious code that executes arbitrary shell commands on the server when a station configuration is restarted. An attacker could gain full control of the AzuraCast server and any systems it can access.

Technologies: [AzuraCast](https://junglewise.ai/threats/technologies/azuracast). Vendors: [AzuraCast](https://junglewise.ai/threats/vendors/azuracast).

## Quick answers

**Is CVE-2026-100857 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100857 being exploited in the wild.

**How severe is CVE-2026-100857?** High severity, with a CVSS score of 8, published 27 September 2026.

**Which products and versions are affected?** AzuraCast before 0.23.4.

**Is there a fix for CVE-2026-100857?** A patch was published on 2026-09-27: Version 0.23.4 released with fix Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-100857 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-100857?** Check whether you run AzuraCast at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The ConfigWriter::cleanUpString() method fails to sanitize Liquidsoap string interpolation sequences (#{...}), allowing code injection into station configuration files. Authenticated users with StationPermissions::Media or StationPermissions::Profile can inject #{process.run()} expressions into playlist URLs or metadata fields; when the station restarts, Liquidsoap evaluates these expressions and executes arbitrary shell commands as the azuracast user.

## Affected products

- AzuraCast AzuraCast before 0.23.4

## Timeline

- 2026-09-27: disclosed
- 2026-09-27: patched: Version 0.23.4 released with fix

## References

- [https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-93fx-5qgc-wr38](https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-93fx-5qgc-wr38)
- [https://www.vulncheck.com/advisories/azuracast-before-0.23.4-remote-code-execution-via-liquidsoap-string-interpolation](https://www.vulncheck.com/advisories/azuracast-before-0.23.4-remote-code-execution-via-liquidsoap-string-interpolation)

## Related threats

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- [AzuraCast command injection in StereoTool configuration](https://junglewise.ai/threats/cve-2026-121429-azuracast-through-0-23-8-contains-a-command-injection)