CVE-2026-54492

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
4.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Koel is a free, open-source music streaming solution. Prior to 9.7.0, the Subsonic-compatible createPodcastChannel.view route accepts an authenticated user's private URL because app/Http/Requests/Subsonic/CreatePodcastChannelRequest.php does not apply the SafeUrl validation used by the regular podcast API. app/Http/Controllers/Subsonic/CreatePodcastChannelController.php passes the URL to app/Services/Podcast/PodcastService.php, where PodcastService::addPodcast() and createParser() invoke Poddle::fromUrl() during channel creation, causing immediate server-side requests to loopback, Docker bridge, or RFC1918 HTTP destinations. The confirmed impact is blind internal request execution because generic response-body exfiltration was not demonstrated through this route. This issue is fixed in version 9.7.0.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100

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 (value × EchelonGraph’s weight)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 15, 2026

Last Modified

September 9, 2026

Advisory Details (4)

Auto-updated Aug 19, 2026
Patch available. Sources: github_release, github, github_pr, github_commit.
GitHub release Patch Available

v9.7.0

Patch available: koel/koel v9.7.0

https://github.com/koel/koel/releases/tag/v9.7.0
GitHub commit Patch Available

commit 1331f335342b (koel/koel)

Patch available: koel/koel v9.7.0 (contains commit 1331f335342b)

https://github.com/koel/koel/commit/1331f335342b405e60ffabdd60f1f398508f996f
GitHub pull request Patch Available

fix: close SSRF gaps in Subsonic podcast and internet radio endpoints

Patch available: koel/koel v9.7.0 (PR #2545 merged 2026-06-03)

https://github.com/koel/koel/pull/2545
GitHub advisoryMentions a patch (unverified)

Authenticated Blind SSRF via Subsonic Podcast Channel Creation · Advisory · koel/koel · GitHub

https://github.com/koel/koel/security/advisories/GHSA-w79m-f3jx-779v

Vendor Advisories for CVE-2026-54492(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 rangeFix by version rangeDependents
phanan/koel1.0.0-beta ... v9.6.0 (169 versions)
  • every version up to 9.7.0: fixed in 9.7.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 35× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-12 15:56 UTCEG score recompute
  4. 2026-10-11 19:39 UTCEG score recompute
  5. 2026-10-11 16:54 UTCEG score recompute
  6. 2026-10-11 14:18 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-01 12:40 UTCEG score recompute
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-09-28 08:44 UTCEG score recompute
  23. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  24. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
Show 49 more
  1. 2026-09-24 08:49 UTCEG score recompute
  2. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  3. 2026-09-23 03:16 UTCEG score recompute
  4. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  6. 2026-09-18 04:44 UTCEG score recompute
  7. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  8. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  10. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  11. 2026-09-14 07:23 UTCEG score recompute
  12. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-09-13 07:13 UTCEG score recompute
  14. 2026-09-11 21:45 UTCEG score recompute
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  16. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  17. 2026-09-09 22:41 UTCEG score recompute
  18. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  19. 2026-09-08 00:50 UTCEG score recompute
  20. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  21. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  22. 2026-09-05 20:50 UTCEG score recompute
  23. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  24. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  25. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  26. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  27. 2026-08-31 04:05 UTCEG score recompute
  28. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  29. 2026-08-30 03:51 UTCEG score recompute
  30. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  31. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  32. 2026-08-26 23:06 UTCEG score recompute
  33. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  34. 2026-08-25 15:45 UTCEG score recompute
  35. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  36. 2026-08-24 15:11 UTCEG score recompute
  37. 2026-08-23 14:58 UTCEG score recompute
  38. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  39. 2026-08-22 14:47 UTCEG score recompute
  40. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  41. 2026-08-21 14:36 UTCEG score recompute
  42. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  43. 2026-08-20 14:25 UTCEG score recompute
  44. 2026-08-20 13:57 UTCEG score recompute
  45. 2026-08-19 21:21 UTCEG score recompute
  46. 2026-07-30 12:19 UTCEG score recompute
  47. 2026-07-26 11:34 UTCEG score recompute
  48. 2026-07-23 03:19 UTCEG score recompute
  49. 2026-07-15 17:20 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-54492?
CVE-2026-54492 is a medium-severity vulnerability; its CVE record was published on July 15, 2026. Koel is a free, open-source music streaming solution. Prior to 9.7.0, the Subsonic-compatible createPodcastChannel.view route accepts an authenticated user's private URL because app/Http/Requests/Subsonic/CreatePodcastChannelRequest.php does not apply the SafeUrl validation used by the regular…
When was the CVE record for CVE-2026-54492 published?
The CVE record for CVE-2026-54492 was published on July 15, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-54492 actively exploited?
CVE-2026-54492 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54492?
CVE-2026-54492 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54492?
A fix for CVE-2026-54492 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54492 are linked in the Vendor Advisories panel on this page.

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