CVE-2026-100848

AzuraCast before 0.23.8 Server-Side Request Forgery via Remote Relay URL

Published: Sep 27, 2026Updated: Sep 27, 2026 Sources: CVE List NVDCWE-918

7.1HIGH

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-918

Affected Products

AzuraCast

oss-projectaka azuracast/azuracast

AzuraCastOn-prem

Communications

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Command and Control

Initial Access

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References

https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-4h6m-rrxm-7w3m

github.com

https://www.vulncheck.com/advisories/azuracast-before-0.23.8-server-side-request-forgery-via-remote-relay-url

vulncheck.com

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