CVE-2026-12526

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-02. 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 week
8.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.1Exploit: None knownExposed services: Not assessed

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

The Advanced Custom Fields: Extended WordPress plugin before 0.9.2.7 does not verify that the requester is authorized to edit the targeted user account in the update-user action of its front-end Forms module; it only checks a capability when the submitted role is administrator or super_admin. On a site that exposes a publicly reachable front-end form whose user-update action targets an existing administrator (a fixed target, or one mapped to a visitor-submitted field) and maps the password to a visitor-submitted field, an unauthenticated visitor can overwrite that administrator's password and take over the account. The default target is the submitting user, so exploitation depends on the form being configured to target another account.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
41
EG Risk 41/100CISA SSVC

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%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 2, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Advanced Custom Fields: Extended < 0.9.2.7 – Unauthenticated Administrator Account Takeover via Front-End User Update Action | CVE 2026-12526 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/a4a9eab6-3c10-402c-a635-3ae275b12c1d/

Vendor Advisories for CVE-2026-12526(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 25× in last 7d / 99× 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 113 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-12526?
CVE-2026-12526 is a high vulnerability published on September 2, 2026. The Advanced Custom Fields: Extended WordPress plugin before 0.9.2.7 does not verify that the requester is authorized to edit the targeted user account in the update-user action of its front-end Forms module; it only checks a capability when the submitted role is administrator or super_admin. On a…
When was CVE-2026-12526 disclosed?
CVE-2026-12526 was first published on September 2, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12526 actively exploited?
CVE-2026-12526 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12526?
CVE-2026-12526 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-12526?
No fix for CVE-2026-12526 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-12526 are linked in the Vendor Advisories panel on this page.

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