CVE-2026-100849 (GCVE-0-2026-100849)

Vulnerability from cvelistv5 – Published: 2026-09-27 01:28 – Updated: 2026-09-28 13:57
VLAI
Title
AzuraCast before 0.23.8 SSRF Filter Bypass via Hostname and Private IPs
Summary
AzuraCast is a self-hosted web radio management suite. In AzuraCast before 0.23.8, the station webhook URL validation in AbstractConnector::getValidUrl() (backend/src/Webhook/Connector/AbstractConnector.php), used by the Generic and Discord webhook connectors, rejects only URLs whose host is a literal link-local IP address (169.254.0.0/16 or fe80::/10). Loopback addresses and RFC1918 private ranges are not rejected, and any non-literal-IP hostname causes the IP parsing call to throw, which skips the check entirely. A user holding only the station-scoped WebHooks permission can therefore configure a webhook pointing at an internal, loopback, or private-network target and cause the server to issue an outbound HTTP POST containing the station's Now Playing data, resulting in server-side request forgery. The PUT /station/{id}/webhook/{id}/test endpoint allows the same low-privileged user to trigger the request on demand. At the time of the advisory no patched version was available.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:57 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6106 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
AzuraCast AzuraCast Affected: 0 , < 0.23.8 (semver)
Unaffected: 0.23.8 (semver)
    cpe:2.3:a:azuracast:azuracast:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-07 00:00
Show details on NVD website
To clipboard 

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