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Advisory record · GHSA-jr4p-4xjh-fwvw

Koel: Server-Side Request Forgery (SSRF) in radio station creation due to missing validation bail

CVSS 6.3 MediumEPSS 0.0017 · 6th percentile

Published by the GitHub Advisory Database at 15 Jul 2026, 18:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
phanan/koelPackagist<9.7.19.7.1
Identifiers
GHSA-jr4p-4xjh-fwvw · CVE-2026-50552 · PKSA-69y7-vwnx-px15
Weakness (CWE)
CWE-918
Tags
Published
15 Jul 2026
Updated
15 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Koel versions before 9.7.1 are vulnerable to server-side request forgery in the radio station creation endpoint (POST /api/radio/stations), because the URL validation rules lack the bail keyword and so the content-type check still issues HTTP requests to private or reserved addresses after the safety check rejects them. Any authenticated user can exploit this, though the response body is not returned, so it is blind SSRF that can also reveal which internal hosts and ports are reachable. Upgrade to Koel 9.7.1.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0017, the 6th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:25 UTC First seen by agentprime
  2. 31 Oct 2026, 14:25 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.