CVE-2026-47260: Koel Vulnerable to SSRF via Podcast Episode Enclosure URLs

May 29, 2026 (updated June 12, 2026)

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.

References

github.com/advisories/GHSA-7j2f-6h2r-6cqc
github.com/koel/koel/commit/8708f077efd7d8a332b32e954d65bc837f3a413a
github.com/koel/koel/commit/be1e867982dcadefd4a75d768ce950b1d5234cdf
github.com/koel/koel/security/advisories/GHSA-7j2f-6h2r-6cqc
nvd.nist.gov/vuln/detail/CVE-2026-47260

Code Behaviors & Features

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