CVE-2026-11966

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-07-17. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

The User Registration & Membership WordPress plugin before 5.2.3 does not perform a capability check for unauthenticated callers on one of its membership payment actions and acts on a caller-supplied user identifier, allowing unauthenticated attackers to delete recently-registered, payment-pending user accounts.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
9.9%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 17, 2026

Advisory Details (1)

Auto-updated Jul 17, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

User Registration & Membership < 5.2.3 – Unauthenticated Limited User Deletion via Stripe Subscription Handler | CVE 2026-11966 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/8e3be064-b3b7-4d68-960b-8c850c3e6f77/

Vendor Advisories for CVE-2026-11966(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 / 263× 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 263 total refreshes for this CVE.

  1. 2026-07-24 14:17 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 03:05 UTCEG score recompute
  4. 2026-07-22 14:08 UTCEPSS rescore
  5. 2026-07-21 15:24 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-19 14:30 UTCEPSS rescore
  8. 2026-07-19 02:28 UTCEPSS rescore
  9. 2026-07-18 10:04 UTCEPSS rescore
  10. 2026-07-17 16:04 UTCEG score recompute
  11. 2026-07-17 16:04 UTCGHSA enrichment
  12. 2026-07-17 13:34 UTCEG score recompute▲ 5.30
  13. 2026-07-17 13:34 UTCGHSA enrichment
  14. 2026-07-17 13:34 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  15. 2026-07-17 13:33 UTCGHSA enrichment
  16. 2026-07-17 13:32 UTCGHSA enrichment
  17. 2026-07-17 13:31 UTCGHSA enrichment
  18. 2026-07-17 13:30 UTCGHSA enrichment
  19. 2026-07-17 13:29 UTCGHSA enrichment
  20. 2026-07-17 13:28 UTCGHSA enrichment
  21. 2026-07-17 13:27 UTCGHSA enrichment
  22. 2026-07-17 13:27 UTCGHSA enrichment
  23. 2026-07-17 13:25 UTCGHSA enrichment
  24. 2026-07-17 13:24 UTCGHSA enrichment
  25. 2026-07-17 13:23 UTCGHSA enrichment
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  1. 2026-07-17 13:22 UTCGHSA enrichment
  2. 2026-07-17 13:21 UTCGHSA enrichment
  3. 2026-07-17 13:20 UTCGHSA enrichment
  4. 2026-07-17 13:20 UTCGHSA enrichment
  5. 2026-07-17 13:18 UTCGHSA enrichment
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  9. 2026-07-17 13:14 UTCGHSA enrichment
  10. 2026-07-17 13:13 UTCGHSA enrichment
  11. 2026-07-17 13:11 UTCGHSA enrichment
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  14. 2026-07-17 13:08 UTCGHSA enrichment
  15. 2026-07-17 13:07 UTCGHSA enrichment
  16. 2026-07-17 13:06 UTCGHSA enrichment
  17. 2026-07-17 13:05 UTCGHSA enrichment
  18. 2026-07-17 13:04 UTCGHSA enrichment
  19. 2026-07-17 13:04 UTCGHSA enrichment
  20. 2026-07-17 13:02 UTCGHSA enrichment
  21. 2026-07-17 12:59 UTCGHSA enrichment
  22. 2026-07-17 12:58 UTCGHSA enrichment
  23. 2026-07-17 12:58 UTCGHSA enrichment
  24. 2026-07-17 12:56 UTCGHSA enrichment
  25. 2026-07-17 12:56 UTCGHSA enrichment
  26. 2026-07-17 12:54 UTCGHSA enrichment
  27. 2026-07-17 12:53 UTCGHSA enrichment
  28. 2026-07-17 12:52 UTCGHSA enrichment
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  30. 2026-07-17 12:51 UTCGHSA enrichment
  31. 2026-07-17 12:49 UTCGHSA enrichment
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  34. 2026-07-17 12:46 UTCGHSA enrichment
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  37. 2026-07-17 12:42 UTCGHSA enrichment
  38. 2026-07-17 12:41 UTCGHSA enrichment
  39. 2026-07-17 12:40 UTCGHSA enrichment
  40. 2026-07-17 12:39 UTCGHSA enrichment
  41. 2026-07-17 12:38 UTCGHSA enrichment
  42. 2026-07-17 12:37 UTCGHSA enrichment
  43. 2026-07-17 12:36 UTCGHSA enrichment
  44. 2026-07-17 12:35 UTCGHSA enrichment
  45. 2026-07-17 12:34 UTCGHSA enrichment
  46. 2026-07-17 12:33 UTCGHSA enrichment
  47. 2026-07-17 12:32 UTCGHSA enrichment
  48. 2026-07-17 12:31 UTCGHSA enrichment
  49. 2026-07-17 12:30 UTCGHSA enrichment
  50. 2026-07-17 12:28 UTCGHSA enrichment
  51. 2026-07-17 12:27 UTCGHSA enrichment
  52. 2026-07-17 12:26 UTCGHSA enrichment
  53. 2026-07-17 12:25 UTCGHSA enrichment
  54. 2026-07-17 12:24 UTCGHSA enrichment
  55. 2026-07-17 12:23 UTCGHSA enrichment
  56. 2026-07-17 12:22 UTCGHSA enrichment
  57. 2026-07-17 12:22 UTCGHSA enrichment
  58. 2026-07-17 12:20 UTCGHSA enrichment
  59. 2026-07-17 12:19 UTCGHSA enrichment
  60. 2026-07-17 12:18 UTCGHSA enrichment
  61. 2026-07-17 12:18 UTCGHSA enrichment
  62. 2026-07-17 12:16 UTCGHSA enrichment
  63. 2026-07-17 12:15 UTCGHSA enrichment
  64. 2026-07-17 12:14 UTCGHSA enrichment
  65. 2026-07-17 12:13 UTCGHSA enrichment
  66. 2026-07-17 12:12 UTCGHSA enrichment
  67. 2026-07-17 12:12 UTCGHSA enrichment
  68. 2026-07-17 12:11 UTCGHSA enrichment
  69. 2026-07-17 12:09 UTCGHSA enrichment
  70. 2026-07-17 12:08 UTCGHSA enrichment
  71. 2026-07-17 12:07 UTCGHSA enrichment
  72. 2026-07-17 12:06 UTCGHSA enrichment
  73. 2026-07-17 12:05 UTCGHSA enrichment
  74. 2026-07-17 12:04 UTCGHSA enrichment
  75. 2026-07-17 12:04 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11966?
CVE-2026-11966 is a medium vulnerability published on July 17, 2026. The User Registration & Membership WordPress plugin before 5.2.3 does not perform a capability check for unauthenticated callers on one of its membership payment actions and acts on a caller-supplied user identifier, allowing unauthenticated attackers to delete recently-registered, payment-pending…
When was CVE-2026-11966 disclosed?
CVE-2026-11966 was first published in the National Vulnerability Database on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11966 actively exploited?
CVE-2026-11966 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11966?
CVE-2026-11966 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-11966?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11966, 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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