AzuraCast before 0.23.8 Server-Side Request Forgery via Remote Relay URL
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA AzuraCast (AzuraCast) Fixed in 0.23.8
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
AzuraCast 0.23.8
7 records Highest priority Priority HIGH 4 HIGH, 3 MEDIUM
Other records, highest priority first
- TI-2026-64985 AzuraCast before 0.23.8 DQL Injection via sortOrderPriority HIGH 77
- TI-2026-64990 AzuraCast before 0.23.8 Command Injection via Streamer UsernamePriority HIGH 73
- TI-2026-64991 AzuraCast before 0.23.8 On-Demand Download Endpoint Authorization BypassPriority HIGH 69
Timeline
- 2026-10-02 Threatist record created from CVE-2026-100848
- 2026-10-03 Alias added: GHSA-xrr6-hwgm-2r77
References
More AzuraCast vulnerabilities
- TI-2023-02372 Improper Restriction of Excessive Authentication Attempts in azuracast/azuracast CVSS 3.1CRITICAL 9.8
- TI-2026-64985 AzuraCast before 0.23.8 DQL Injection via sortOrder CVSS 4.0HIGH 8.7
- TI-2026-64994 AzuraCast before 0.23.6 Code Injection via Remote Relay Password CVSS 4.0HIGH 8.7
- TI-2026-64990 AzuraCast before 0.23.8 Command Injection via Streamer Username CVSS 4.0HIGH 8.7
- TI-2026-53672 AzuraCast through 0.23.8 Liquidsoap Configuration Write via Profile Edit Serialization Group Bypass CVSS 4.0HIGH 8.7
- TI-2026-30886 AzuraCast: Password Reset Poisoning via Untrusted X-Forwarded-Host Header Leads to Account Takeover and 2FA Bypass CVSS 3.1HIGH 8.8
Sources
- CVE-2026-100848 · CVE Program
- CVE-2026-100848 · NVD
- FIRST EPSS
- GHSA-xrr6-hwgm-2r77 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences