Server-side request forgery in AzuraCast webhook connectors
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
AzuraCast before 0.24.0 contains a server-side request forgery flaw, CWE-918, in its webhook connectors. A station user with WebHooks permission can bypass the UserUrlFilter guard through the Mastodon, Telegram, GroupMe, and RadioReg connectors. By setting instance_url, api, or webhookurl to internal addresses and triggering the webhook test endpoint, the attacker can reach loopback, private-network, or cloud-metadata services.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
AzuraCast before 0.24.0 contains a server-side request forgery vulnerability that allows station users with WebHooks permission to bypass the UserUrlFilter guard via the Mastodon, Telegram, GroupMe, and RadioReg connectors. Attackers can set instance_url, api, or webhookurl to internal addresses and trigger the webhook test endpoint to reach loopback, private-network, or cloud-metadata services.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Update AzuraCast to version 0.24.0, which fixes the issue.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
- Fix · CNA AzuraCast (AzuraCast) Fixed in 0.24.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
AzuraCast 0.24.0
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2026-84312 Missing authorization in AzuraCast station waveform endpointsPriority MEDIUM 57
- TI-2026-84315 Stored CSV formula injection in AzuraCast bulk media exportPriority LOW 23
- TI-2026-84314 AzuraCast CRLF Injection via Mount display_name in PLS PlaylistPriority LOW 22
Timeline
- 2026-11-03 Threatist record created from CVE-2026-121431
- 2026-11-03 Alias added: GHSA-8x7j-92r4-99vr
- 2026-11-05 Priority changed: MEDIUM → LOW
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-2026-121431 · CVE Program
- CVE-2026-121431 · NVD
- FIRST EPSS
- GHSA-8x7j-92r4-99vr · GitHub Advisory Database · CC BY 4.0
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