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CVE-2026-100849— AzuraCast before 0.23.8 SSRF Filter Bypass via Hostname and Private IPs

Quick assessment

Affected
AzuraCast AzuraCast
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AzuraCast 是一套自托管的网页电台管理系统。在 AzuraCast 0.23.8 之前的版本中， 函数（位于 ）用于验证电台 Webhook 的 URL，该函数被通用（Generic）和 Discord Webhook 连接器所使用。此验证机制仅拒绝那些主机地址为字面意义的链路本地 IP 地址（即 或 ）的 URL，而并未拒绝回环地址（loopback addresses）和 RFC1918 私有地址段。此外，对于任何非字面意义 IP 的主机名，IP 地址解析调用会抛出异常，从而完全跳过安全检查。因此，仅拥

CVSS 7.1 · High EPSS 0.24% · P13
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I. Basic Information for CVE-2026-100849

Vulnerability Information
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Vulnerability Title
AzuraCast before 0.23.8 SSRF Filter Bypass via Hostname and Private IPs
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AzuraCast AzuraCast 0 ~ 0.23.8 -

II. Public POCs for CVE-2026-100849

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III. Intelligence Information for CVE-2026-100849

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Vendor Advisories for CVE-2026-100849 (1)

Other References for CVE-2026-100849 (1)

Same Patch Batch · AzuraCast · 2026-09-27 · 11 CVEs total

CVE-2026-100852 8.8 HIGH AzuraCast before 0.23.8 Command Injection via Streamer Username
CVE-2026-100856 8.8 HIGH AzuraCast before 0.23.6 Code Injection via Remote Relay Password
CVE-2026-100857 8.0 HIGH AzuraCast before 0.23.4 Remote Code Execution via Liquidsoap string interpolation
CVE-2026-100850 7.7 HIGH AzuraCast before 0.23.8 SSRF and Local File Read via Remote Playlist
CVE-2026-100851 7.6 HIGH AzuraCast before 0.23.8 Broken Access Control via GET /api/station/{id}/vue/profile
CVE-2026-100847 7.5 HIGH AzuraCast before 0.23.8 DQL Injection via sortOrder
CVE-2026-100848 7.1 HIGH AzuraCast before 0.23.8 Server-Side Request Forgery via Remote Relay URL
CVE-2026-100855 6.5 MEDIUM AzuraCast before 0.23.6 Missing Permission Check via /play
CVE-2026-100854 6.3 MEDIUM AzuraCast before 0.23.6 Metadata Injection via Liquidsoap API
CVE-2026-100853 5.9 MEDIUM AzuraCast before 0.23.8 On-Demand Download Endpoint Authorization Bypass

IV. Related Vulnerabilities

Same product: AzuraCast
Same vendor: AzuraCast
Same weakness: CWE-918

V. Comments for CVE-2026-100849

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