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TI-2026-34840 Aliases CVE-2026-47260GHSA-7j2f-6h2r-6cqc

Koel Vulnerable to SSRF via Podcast Episode Enclosure URLs

Priority HIGH 67CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.

Summary

Koel is a free, open-source music streaming solution. Prior to version 9.3.5, Koel validates the podcast feed URL via the SafeUrl rule (DNS resolution + public IP check), but the individual episode <enclosure url="..."> values extracted from the RSS XML are stored directly into the database without any SSRF validation. When a user plays an episode, the server downloads the full HTTP response from the unvalidated enclosure URL via Http::sink()->get() and streams it back to the user, enabling full-read SSRF against internal services. This issue has been patched in version 9.3.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd percentileScored 2026-11-07
Fix Fixed koel (koel): 9.3.5phanan/koel (Packagist): 9.3.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
koelkoelbefore 9.3.59.3.5Patch availableCNA
—phanan/koel (Packagist)before 9.3.59.3.5Patch availableGHSA-7j2f-6h2r-6cqc
  • koel Vendorkoel Affected before 9.3.5 Fixed in 9.3.5 Patch available CNA
  • phanan/koel (Packagist) Vendor— Affected before 9.3.5 Fixed in 9.3.5 Patch available GHSA-7j2f-6h2r-6cqc

Remediation

  • Fix · CNA koel (koel) Fixed in 9.3.5
  • Fix · GHSA-7j2f-6h2r-6cqc phanan/koel (Packagist) Fixed in 9.3.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47260
  2. 2026-10-03 Alias added: GHSA-7j2f-6h2r-6cqc

References

Advisory 1

Other 4

  • TI-2026-39339 Koel: Authenticated Full-Read SSRF via Subsonic Internet Radio Stations CVSS 3.1HIGH 7.7
  • TI-2026-39337 Koel: Incomplete fix for CVE-2026-47260 — systemic SSRF in podcast & radio fetch paths CVSS 3.1HIGH 7.1
  • TI-2026-39340 Server-side request forgery in koel CVSS 4.0MEDIUM 5.3
  • TI-2026-37274 Koel: Server-Side Request Forgery (SSRF) in radio station creation due to missing validation bail CVSS 3.1MEDIUM 6.3
  • TI-2026-39338 Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation CVSS 3.1MEDIUM 4.3
  • TI-2021-12956 Koel before 5.1.4 lacks login throttling, lacks a password strength policy, and shows… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences