CVE-2026-54491

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 85% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Koel is a free, open-source music streaming solution. Prior to 9.7.1, outbound podcast and radio fetch paths perform a point-in-time App\Helpers\Network::isPublicHost() or isSafeUrl() check without pinning the validated address, and most paths lack redirect-hop validation and do not revalidate every redirect target. PhanAn\Poddle\Poddle::fromUrl(), PodcastService::getStreamableUrl(), PodcastService::isPodcastObsolete(), App\Rules\HasAudioContentType, and App\Rules\SafeUrl can therefore follow an attacker-controlled redirect to an internal address or connect after DNS rebinding changes a public resolution to a private one. These paths are reachable through podcast and radio APIs, including createPodcastChannel, createInternetRadioStation, refreshPodcasts, apiResource podcasts, and radio/stations, allowing an authenticated user to request internal services or cloud metadata and potentially receive parsed or streamed response content. This issue is fixed in version 9.7.1.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

July 15, 2026

Last Modified

August 20, 2026

Advisory Details (6)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available

v9.7.1

Patch available: koel/koel v9.7.1

https://github.com/koel/koel/releases/tag/v9.7.1
github_commit Patch Available

commit c264a3d52513 (koel/koel)

Patch available: koel/koel v9.7.0 (contains commit c264a3d52513)

https://github.com/koel/koel/commit/c264a3d52513a83b21e1cc3a20e895caea97fc4a
github_commit Patch Available

commit 5f6ce2cefd08 (koel/koel)

Patch available: koel/koel v9.7.1 (contains commit 5f6ce2cefd08)

https://github.com/koel/koel/commit/5f6ce2cefd08f437a269236b677ad971517ccbb6
github_pr Patch Available

fix: close remaining SSRF advisories (DNS rebinding, IPv6 transition, bail)

Patch available: koel/koel v9.7.1 (PR #2549 merged 2026-06-04)

https://github.com/koel/koel/pull/2549
github_pr Patch Available

fix: validate every redirect hop on outbound HTTP

Patch available: koel/koel v9.7.0 (PR #2546 merged 2026-06-03)

https://github.com/koel/koel/pull/2546
github Patch Available🟡 PoC Available

Incomplete fix for CVE-2026-47260 — systemic SSRF in podcast & radio fetch paths · Advisory · koel/koel · GitHub

https://github.com/koel/koel/security/advisories/GHSA-6qvr-wjmv-v8mm

Vendor Advisories for CVE-2026-54491(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
phanan/koel1.0.0-beta ... v9.7.0 (170 versions)9.7.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 19× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 03:49 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-28 01:52 UTCEG score recompute
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-27 00:31 UTCEG score recompute
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 23:54 UTCEG score recompute
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-24 22:56 UTCEG score recompute
  11. 2026-08-23 09:53 UTCEG score recompute
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 09:17 UTCEG score recompute
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 08:40 UTCEG score recompute
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-20 20:21 UTCEG score recompute
  18. 2026-08-20 19:56 UTCEG score recompute
  19. 2026-08-19 21:21 UTCEG score recompute
  20. 2026-07-30 14:10 UTCEG score recompute
  21. 2026-07-26 11:32 UTCEG score recompute
  22. 2026-07-23 03:19 UTCEG score recompute
  23. 2026-07-15 18:20 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-54491?
CVE-2026-54491 is a high vulnerability published on July 15, 2026. Koel is a free, open-source music streaming solution. Prior to 9.7.1, outbound podcast and radio fetch paths perform a point-in-time App\Helpers\Network::isPublicHost() or isSafeUrl() check without pinning the validated address, and most paths lack redirect-hop validation and do not revalidate…
When was CVE-2026-54491 disclosed?
CVE-2026-54491 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54491 actively exploited?
CVE-2026-54491 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 85.0% of all scored CVEs.
What is the CVSS score of CVE-2026-54491?
CVE-2026-54491 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-54491?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54491, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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