CVE-2026-66437

MEDIUMPre-NVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

Score 4.9 from GitHub Security Advisory published 2026-07-27. a secondary CVSS source baseline 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.9Exploit: None knownExposed: 0

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

Contributor Server Side Request Forgery (SSRF) in Feedzy <= 5.2.4 versions.

CVSS v3
4.9
EG Score
4.9(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity49% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 27, 2026

References (1)

Vendor Advisories for CVE-2026-66437(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 59× 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.

Showing the most recent 100 of 131 total refreshes for this CVE.

  1. 2026-09-19 08:17 UTCEG score recompute
  2. 2026-09-19 08:17 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 02:24 UTCEG score recompute
  5. 2026-09-18 02:24 UTCGHSA enrichment
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 11:53 UTCEG score recompute
  8. 2026-09-16 11:53 UTCGHSA enrichment
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 09:10 UTCEG score recompute
  11. 2026-09-15 09:10 UTCGHSA enrichment
  12. 2026-09-13 20:58 UTCEG score recompute
  13. 2026-09-13 20:58 UTCGHSA enrichment
  14. 2026-09-12 17:28 UTCGHSA enrichment
  15. 2026-09-11 15:53 UTCEG score recompute
  16. 2026-09-11 15:53 UTCGHSA enrichment
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-11 09:37 UTCEPSS rescore
  19. 2026-09-10 10:15 UTCEG score recompute
  20. 2026-09-10 10:14 UTCGHSA enrichment
  21. 2026-09-09 08:22 UTCEG score recompute
  22. 2026-09-09 08:22 UTCGHSA enrichment
  23. 2026-09-08 22:01 UTCEPSS rescore
  24. 2026-09-08 01:02 UTCEG score recompute
  25. 2026-09-08 01:02 UTCGHSA enrichment
Show 75 more
  1. 2026-09-07 16:01 UTCEPSS rescore
  2. 2026-09-06 23:29 UTCEG score recompute
  3. 2026-09-06 23:29 UTCGHSA enrichment
  4. 2026-09-06 13:47 UTCEPSS rescore
  5. 2026-09-05 19:15 UTCEG score recompute
  6. 2026-09-05 19:15 UTCGHSA enrichment
  7. 2026-09-05 15:31 UTCEPSS rescore
  8. 2026-09-04 12:32 UTCEG score recompute
  9. 2026-09-04 12:32 UTCGHSA enrichment
  10. 2026-09-04 05:07 UTCEPSS rescore
  11. 2026-09-01 22:59 UTCEG score recompute
  12. 2026-09-01 22:59 UTCGHSA enrichment
  13. 2026-09-01 13:54 UTCEPSS rescore
  14. 2026-09-01 04:40 UTCEPSS rescore
  15. 2026-08-31 01:25 UTCEG score recompute
  16. 2026-08-31 01:25 UTCGHSA enrichment
  17. 2026-08-30 19:17 UTCEPSS rescore
  18. 2026-08-30 01:22 UTCEPSS rescore
  19. 2026-08-29 23:53 UTCEG score recompute
  20. 2026-08-29 23:53 UTCGHSA enrichment
  21. 2026-08-28 21:42 UTCEPSS rescore
  22. 2026-08-27 21:00 UTCEG score recompute
  23. 2026-08-27 21:00 UTCGHSA enrichment
  24. 2026-08-26 14:47 UTCEPSS rescore
  25. 2026-08-26 14:24 UTCEG score recompute
  26. 2026-08-26 14:24 UTCGHSA enrichment
  27. 2026-08-25 13:49 UTCEPSS rescore
  28. 2026-08-25 12:49 UTCEG score recompute
  29. 2026-08-25 12:48 UTCGHSA enrichment
  30. 2026-08-24 11:15 UTCEG score recompute
  31. 2026-08-24 11:15 UTCGHSA enrichment
  32. 2026-08-23 09:43 UTCEG score recompute
  33. 2026-08-23 09:43 UTCGHSA enrichment
  34. 2026-08-23 00:19 UTCEPSS rescore
  35. 2026-08-22 08:11 UTCGHSA enrichment
  36. 2026-08-21 06:39 UTCEG score recompute
  37. 2026-08-21 06:39 UTCGHSA enrichment
  38. 2026-08-20 22:56 UTCEPSS rescore
  39. 2026-08-20 05:07 UTCEG score recompute
  40. 2026-08-20 05:07 UTCGHSA enrichment
  41. 2026-08-19 17:04 UTCEPSS rescore
  42. 2026-08-19 03:34 UTCEG score recompute
  43. 2026-08-19 03:34 UTCGHSA enrichment
  44. 2026-08-18 13:48 UTCEPSS rescore
  45. 2026-08-18 01:24 UTCEG score recompute
  46. 2026-08-18 01:24 UTCGHSA enrichment
  47. 2026-08-17 13:47 UTCEPSS rescore
  48. 2026-08-16 23:09 UTCEG score recompute
  49. 2026-08-16 23:09 UTCGHSA enrichment
  50. 2026-08-16 14:56 UTCEPSS rescore
  51. 2026-08-15 21:37 UTCEG score recompute
  52. 2026-08-15 21:37 UTCGHSA enrichment
  53. 2026-08-15 01:30 UTCEPSS rescore
  54. 2026-08-14 20:05 UTCEG score recompute
  55. 2026-08-14 20:05 UTCGHSA enrichment
  56. 2026-08-13 22:00 UTCEPSS rescore
  57. 2026-08-13 18:32 UTCGHSA enrichment
  58. 2026-08-12 17:00 UTCEG score recompute
  59. 2026-08-12 17:00 UTCGHSA enrichment
  60. 2026-08-12 13:51 UTCEPSS rescore
  61. 2026-08-11 15:27 UTCEG score recompute
  62. 2026-08-11 15:27 UTCGHSA enrichment
  63. 2026-08-11 00:00 UTCEPSS rescore
  64. 2026-08-10 13:55 UTCGHSA enrichment
  65. 2026-08-09 12:23 UTCEG score recompute
  66. 2026-08-09 12:23 UTCGHSA enrichment
  67. 2026-08-08 16:37 UTCEPSS rescore
  68. 2026-08-08 10:50 UTCEG score recompute
  69. 2026-08-08 10:50 UTCGHSA enrichment
  70. 2026-08-07 09:17 UTCEG score recompute
  71. 2026-08-07 09:17 UTCGHSA enrichment
  72. 2026-08-06 13:47 UTCEPSS rescore
  73. 2026-08-06 07:44 UTCEG score recompute
  74. 2026-08-06 07:44 UTCGHSA enrichment
  75. 2026-08-05 19:17 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66437?
CVE-2026-66437 is a medium vulnerability published on July 27, 2026. Contributor Server Side Request Forgery (SSRF) in Feedzy <= 5.2.4 versions.
When was CVE-2026-66437 disclosed?
CVE-2026-66437 was first published in the National Vulnerability Database on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66437 actively exploited?
CVE-2026-66437 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 98.2% of all scored CVEs.
What is the CVSS score of CVE-2026-66437?
CVE-2026-66437 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2026-66437?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66437, 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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