CVE-2026-54562

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% 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
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 15, 2026

Advisory Details (3)

Auto-updated Jul 15, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Non-admin remote download users can SSRF loopback/internal services and read imported responses · Advisory · cloudreve/cloudreve · GitHub

https://github.com/cloudreve/cloudreve/security/advisories/GHSA-x756-g4x3-c64m
github_release Patch Available

4.16.1

Patch available: cloudreve/cloudreve 4.16.1

https://github.com/cloudreve/cloudreve/releases/tag/4.16.1
github_commit

commit aaebf317a78f (cloudreve/cloudreve)

Fix landed in cloudreve/cloudreve commit aaebf317a78f — awaiting tagged release

https://github.com/cloudreve/cloudreve/commit/aaebf317a78f2413d74afd66c21a1f3143711312

Vendor Advisories for CVE-2026-54562(1)

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

Affected Packages

(3 across 1 ecosystem)
Go(3)
PackageVulnerable rangeFixed inDependents
github.com/cloudreve/Cloudreve———
github.com/cloudreve/Cloudreve/v3———
github.com/cloudreve/Cloudreve/v4—4.0.0-20260606025411-aaebf317a78f—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 52× 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 03:52 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-27 21:50 UTCEG score recompute
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-26 23:09 UTCEG score recompute
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 21:06 UTCEG score recompute
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-24 21:45 UTCEG score recompute
  11. 2026-08-23 00:20 UTCEG score recompute
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 01:34 UTCEG score recompute
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 02:53 UTCEG score recompute
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-20 04:07 UTCEG score recompute
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-19 05:24 UTCEG score recompute
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-18 06:19 UTCEG score recompute
  22. 2026-08-17 13:47 UTCEPSS rescore
  23. 2026-08-17 07:36 UTCEG score recompute
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 08:55 UTCEG score recompute
Show 51 more
  1. 2026-08-16 02:14 UTCEPSS rescore
  2. 2026-08-15 10:14 UTCEG score recompute
  3. 2026-08-15 01:30 UTCEPSS rescore
  4. 2026-08-14 11:32 UTCEG score recompute
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-12 14:10 UTCEG score recompute
  7. 2026-08-12 13:51 UTCEPSS rescore
  8. 2026-08-11 15:28 UTCEG score recompute
  9. 2026-08-11 00:00 UTCEPSS rescore
  10. 2026-08-09 18:06 UTCEG score recompute
  11. 2026-08-09 13:46 UTCEPSS rescore
  12. 2026-08-08 19:25 UTCEG score recompute
  13. 2026-08-08 16:37 UTCEPSS rescore
  14. 2026-08-07 20:44 UTCEG score recompute
  15. 2026-08-06 22:02 UTCEG score recompute
  16. 2026-08-06 13:47 UTCEPSS rescore
  17. 2026-08-05 23:21 UTCEG score recompute
  18. 2026-08-05 19:17 UTCEPSS rescore
  19. 2026-08-05 00:40 UTCEG score recompute
  20. 2026-08-04 15:10 UTCEPSS rescore
  21. 2026-08-04 10:39 UTCEPSS rescore
  22. 2026-08-04 01:42 UTCEG score recompute
  23. 2026-08-03 10:36 UTCEPSS rescore
  24. 2026-08-02 04:20 UTCEG score recompute
  25. 2026-08-02 02:27 UTCEPSS rescore
  26. 2026-08-01 05:38 UTCEG score recompute
  27. 2026-08-01 04:16 UTCEPSS rescore
  28. 2026-07-31 06:52 UTCEG score recompute
  29. 2026-07-30 16:28 UTCEPSS rescore
  30. 2026-07-30 08:08 UTCEG score recompute
  31. 2026-07-30 01:30 UTCEPSS rescore
  32. 2026-07-29 07:53 UTCEG score recompute
  33. 2026-07-28 15:37 UTCEPSS rescore
  34. 2026-07-28 09:01 UTCEG score recompute
  35. 2026-07-27 10:19 UTCEG score recompute
  36. 2026-07-26 14:54 UTCEPSS rescore
  37. 2026-07-26 11:37 UTCEG score recompute
  38. 2026-07-25 14:18 UTCEPSS rescore
  39. 2026-07-24 14:18 UTCEPSS rescore
  40. 2026-07-23 14:18 UTCEPSS rescore
  41. 2026-07-23 03:19 UTCEG score recompute
  42. 2026-07-22 14:08 UTCEPSS rescore
  43. 2026-07-21 15:25 UTCEPSS rescore
  44. 2026-07-20 17:08 UTCEPSS rescore
  45. 2026-07-19 14:31 UTCEPSS rescore
  46. 2026-07-19 14:31 UTCEPSS rescore
  47. 2026-07-19 02:29 UTCEPSS rescore
  48. 2026-07-18 10:04 UTCEPSS rescore
  49. 2026-07-16 17:03 UTCEPSS rescore
  50. 2026-07-15 14:51 UTCEG score recompute
  51. 2026-07-15 14:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54562?
CVE-2026-54562 is a medium vulnerability published on July 15, 2026. Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or…
When was CVE-2026-54562 disclosed?
CVE-2026-54562 was first published in the National Vulnerability Database on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54562 actively exploited?
CVE-2026-54562 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 66.8% of all scored CVEs.
What is the CVSS score of CVE-2026-54562?
CVE-2026-54562 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-54562?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54562, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-54562

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