CVE-2026-5411

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-05. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:wordfence, epss, ghsa
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

The WP Captcha PRO (the premium version of the Advanced Google reCAPTCHA plugin, both have the same slug) plugin for WordPress is vulnerable to arbitrary file upload in all versions up to, and including, 5.38. This is due to a capability check in the save_ajax() function of the licensing module, combined with unrestricted file extraction in sync_cloud_protection(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files including PHP webshells to the server by injecting a malicious cloud_protection_url into the license meta, which the plugin then downloads and extracts without file type validation into a web-accessible uploads directory. This can be used for remote code execution. Note: The vulnerability can only be exploited with a remote URL if "allow_url_fopen" is enabled in the php.ini config.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

June 5, 2026

Last Modified

June 6, 2026

Advisory Details (1)

Auto-updated Jun 5, 2026
No patch confirmed yet.
generic

WP Captcha - WP Captcha

https://getwpcaptcha.com

Vendor Advisories for CVE-2026-5411(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 6× in last 7d / 30× 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 261 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-5411?
CVE-2026-5411 is a high vulnerability published on June 5, 2026. The WP Captcha PRO (the premium version of the Advanced Google reCAPTCHA plugin, both have the same slug) plugin for WordPress is vulnerable to arbitrary file upload in all versions up to, and including, 5.38. This is due to a capability check in the saveajax() function of the licensing module,…
When was CVE-2026-5411 disclosed?
CVE-2026-5411 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on June 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5411 actively exploited?
CVE-2026-5411 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 52.1% of all scored CVEs.
What is the CVSS score of CVE-2026-5411?
CVE-2026-5411 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-5411?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5411, 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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