CVE-2021-47965

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-15. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

WordPress Plugin WP Super Edit 2.5.4 and earlier contains an unrestricted file upload vulnerability in the FCKeditor component that allows attackers to upload dangerous file types without validation. Attackers can upload arbitrary files through the filemanager upload endpoint to achieve remote code execution and complete system compromise.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

May 15, 2026

Last Modified

May 25, 2026

Advisory Details (4)

Auto-updated Sep 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

WordPress Plugin WP Super Edit 2.5.4 Unrestricted File Upload | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wordpress-plugin-wp-super-edit-unrestricted-file-upload
generic

WP Super Edit – WordPress plugin | WordPress.org

https://wordpress.org/plugins/wp-super-edit/
generic

Blog Tool, Publishing Platform, and CMS – WordPress.org

https://wordpress.org
generic🟡 PoC Available

Wordpress Plugin WP Super Edit 2.5.4 - Remote File Upload - PHP webapps Exploit

https://www.exploit-db.com/exploits/49839

Vendor Advisories for CVE-2021-47965(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 7× in last 7d / 31× 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 389 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-47965?
CVE-2021-47965 is a critical vulnerability published on May 15, 2026. WordPress Plugin WP Super Edit 2.5.4 and earlier contains an unrestricted file upload vulnerability in the FCKeditor component that allows attackers to upload dangerous file types without validation. Attackers can upload arbitrary files through the filemanager upload endpoint to achieve remote code…
When was CVE-2021-47965 disclosed?
CVE-2021-47965 was first published in the National Vulnerability Database on May 15, 2026, with the most recent update on May 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47965 actively exploited?
CVE-2021-47965 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.7% of all scored CVEs.
What is the CVSS score of CVE-2021-47965?
CVE-2021-47965 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2021-47965?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47965, 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.

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