# CVE-2026-100856: AzuraCast code injection in remote relay password field

Source: https://junglewise.ai/threats/cve-2026-100856-azuracast-before-0-23-6-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-2026-100856 · Severity: high · CVSS 8.8 · Published 2026-09-27

AzuraCast is a self-hosted radio station management platform. A code injection vulnerability in the remote relay password field allows users with RemoteRelays station permission to inject and execute arbitrary code within the Liquidsoap audio streaming process, potentially exposing internal API keys or disrupting station broadcasts.

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

## Quick answers

**Is CVE-2026-100856 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100856 being exploited in the wild.

**How severe is CVE-2026-100856?** High severity, with a CVSS score of 8.8, published 27 September 2026.

**Which products and versions are affected?** AzuraCast before 0.23.6.

**Is there a fix for CVE-2026-100856?** A patch was published on 2026-04-23: version 0.23.6 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-100856 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-100856?** 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 vulnerability exists in the ConfigWriter.php cleanUpString() method, which uses an ungreedy regex that can be bypassed via nested Liquidsoap interpolation syntax (#{#{EXPR}}). The password field was incompletely migrated from the vulnerable cleanUpString() to the safe toRawString() method during a prior patch. An attacker with RemoteRelays permission can inject nested interpolation syntax that bypasses the regex filter and executes arbitrary Liquidsoap code when the config is regenerated.

## Affected products

- AzuraCast AzuraCast before 0.23.6

## Timeline

- 2026-04-23: disclosed
- 2026-04-23: patched: version 0.23.6 released

## References

- [https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-q4ph-8x8g-95f8](https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-q4ph-8x8g-95f8)
- [https://www.vulncheck.com/advisories/azuracast-before-0.23.6-code-injection-via-remote-relay-password](https://www.vulncheck.com/advisories/azuracast-before-0.23.6-code-injection-via-remote-relay-password)

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