CVE-2026-11963

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-13. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: Elevated riskExposed: 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 5.2.2 does not perform an authorization check on a membership-upgrade action and derives the user to modify from a caller-supplied identifier instead of the current user, allowing any authenticated user such as a subscriber to change another user's WordPress role and membership tier.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track*)
EG Risk 52/100SSVC: 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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 13, 2026

Advisory Details (1)

Auto-updated Jul 13, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

User Registration & Membership < 5.2.2 – Subscriber+ Cross-User Role and Membership Tier Modification via IDOR | CVE 2026-11963 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/a34a916a-983e-48a5-8f10-99214ee3b613/

Vendor Advisories for CVE-2026-11963(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 112× 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 156 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-11963?
CVE-2026-11963 is a high vulnerability published on July 13, 2026. The User Registration & Membership WordPress plugin before 5.2.2 does not perform an authorization check on a membership-upgrade action and derives the user to modify from a caller-supplied identifier instead of the current user, allowing any authenticated user such as a subscriber to change…
When was CVE-2026-11963 disclosed?
CVE-2026-11963 was first published in the National Vulnerability Database on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11963 actively exploited?
CVE-2026-11963 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 72.3% of all scored CVEs.
What is the CVSS score of CVE-2026-11963?
CVE-2026-11963 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-11963?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11963, 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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