CVE Catalog

CVE-2026-100848

HighCVSS 7.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.18%

7th percentile - higher than 7% of all known CVEs

Summary

AzuraCast before 0.23.8 contains an SSRF vulnerability in Remote Relay URL validation. The validation only checks URL syntax and scheme, with no host or IP restrictions. A user with RemoteRelays permission can set a URL to loopback, private network, or cloud metadata addresses, and the automatic Now Playing sync will send requests to those addresses.

Risk Assessment

An attacker can use the server to scan internal networks or access cloud metadata, potentially leading to credential theft or privilege escalation.

Recommendation

Update AzuraCast to a patched version when available. Restrict RemoteRelays permissions and use allowlists for addresses.

Other vulnerabilities in AzuraCast

See all
Original NVD description (English source)

AzuraCast (Composer package azuracast/azuracast) before 0.23.8 validates a station's "Remote Relay" URL only for URL syntax and an http/https scheme (Utilities\Urls::parseUserUrl, used by StationRemote::getUrlAsUri) and performs no host or IP address restriction. A user holding only the station-scoped RemoteRelays permission can therefore set a Remote Relay URL pointing at loopback, private-network, or cloud-metadata addresses (e.g. http://127.0.0.1:<port>/ or http://169.254.169.254/latest/meta-data/), and AzuraCast's periodic background Now Playing sync (AbstractRemote::getNowPlayingAsync) will automatically and repeatedly issue HTTP requests to that address, resulting in server-side request forgery against internal resources. This affects the main branch as of commit bcf8754eef3a268ad82c3db4d81f7920c3c28b56 (2026-07-31); no patched version is available at the time of the advisory.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS