CVE-2026-87759

HIGHPre-NVD 8.88.8
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-12. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.8Exploit: 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 Add User Autocomplete WordPress plugin before 1.2 does not perform any capability or nonce check before creating a pending site-membership invitation carrying a caller-supplied role, allowing any authenticated user, such as a subscriber, to grant themselves the administrator role on a multisite installation.

CVSS v3
8.8
EG Score
8.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100

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 (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 12, 2026

Last Modified

September 14, 2026

Advisory Details (1)

Auto-updated Sep 12, 2026
No fix on record yet.
Web page

Add User Autocomplete < 1.2 – Subscriber+ Privilege Escalation | CVE 2026-87759 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/41020730-c79a-43b4-a902-3a34fdca90d6/

Vendor Advisories for CVE-2026-87759(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 29× in last 7d / 118× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 121 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 21 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:54 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  2. 2026-10-11 19:16 UTCEG score recompute
  3. 2026-10-11 16:33 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  5. 2026-10-11 13:49 UTCEG score recompute
  6. 2026-10-11 06:42 UTCEG score recompute
  7. 2026-10-11 06:42 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  9. 2026-10-10 16:02 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  10. 2026-10-10 04:17 UTCEG score recompute
  11. 2026-10-10 04:17 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-10-09 16:24 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-10-08 23:09 UTCEG score recompute
  15. 2026-10-08 23:09 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-08 10:10 UTCEG score recompute
  18. 2026-10-08 10:10 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-10-07 22:24 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-10-07 10:12 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  22. 2026-10-06 22:27 UTCEG score recompute
  23. 2026-10-06 22:27 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  25. 2026-10-06 10:43 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
Show 75 more
  1. 2026-10-05 22:54 UTCEG score recompute
  2. 2026-10-05 22:54 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  3. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-05 11:11 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  5. 2026-10-04 23:26 UTCEG score recompute
  6. 2026-10-04 23:26 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  7. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-04 11:41 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  9. 2026-10-03 23:55 UTCEG score recompute
  10. 2026-10-03 23:55 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-10-03 12:10 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  12. 2026-10-03 00:26 UTCEG score recompute
  13. 2026-10-03 00:26 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-10-02 12:42 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  15. 2026-10-02 00:58 UTCEG score recompute
  16. 2026-10-02 00:58 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-01 12:58 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-01 01:14 UTCEG score recompute
  20. 2026-10-01 01:13 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-09-30 13:30 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-09-30 01:37 UTCEG score recompute
  24. 2026-09-30 01:37 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-09-29 08:02 UTCEG score recompute
  26. 2026-09-29 08:02 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  27. 2026-09-28 20:17 UTCEG score recompute
  28. 2026-09-28 20:17 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  29. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  30. 2026-09-28 07:42 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  31. 2026-09-27 19:58 UTCEG score recompute
  32. 2026-09-27 19:58 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  33. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  34. 2026-09-27 08:14 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  35. 2026-09-26 20:29 UTCEG score recompute
  36. 2026-09-26 20:29 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  37. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  38. 2026-09-26 08:44 UTCEG score recompute
  39. 2026-09-26 08:44 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  40. 2026-09-25 21:00 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  41. 2026-09-25 05:57 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  42. 2026-09-24 18:13 UTCEG score recompute
  43. 2026-09-24 18:13 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  44. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  45. 2026-09-24 05:55 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  46. 2026-09-23 18:10 UTCEG score recompute
  47. 2026-09-23 18:10 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  48. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  49. 2026-09-23 06:26 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  50. 2026-09-22 18:42 UTCEG score recompute
  51. 2026-09-22 18:42 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  52. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  53. 2026-09-22 06:57 UTCEG score recompute
  54. 2026-09-22 06:57 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  55. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  56. 2026-09-21 19:13 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  57. 2026-09-21 07:29 UTCEG score recompute
  58. 2026-09-21 07:29 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  59. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  60. 2026-09-20 19:44 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  61. 2026-09-20 08:00 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  62. 2026-09-19 19:40 UTCEG score recompute
  63. 2026-09-19 19:40 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  64. 2026-09-19 07:56 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  65. 2026-09-18 20:13 UTCEG score recompute
  66. 2026-09-18 20:12 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  67. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  68. 2026-09-18 08:25 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  69. 2026-09-17 20:41 UTCEG score recompute
  70. 2026-09-17 20:41 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  71. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  72. 2026-09-17 08:57 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  73. 2026-09-16 21:13 UTCEG score recompute
  74. 2026-09-16 21:13 UTCGHSA enrichmentGHSA-2x96-8ghm-3875 · GitHub severity HIGH · GitHub CVSS 8.8
  75. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.2% · 14th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87759?
CVE-2026-87759 is a high-severity vulnerability; its CVE record was published on September 12, 2026. The Add User Autocomplete WordPress plugin before 1.2 does not perform any capability or nonce check before creating a pending site-membership invitation carrying a caller-supplied role, allowing any authenticated user, such as a subscriber, to grant themselves the administrator role on a multisite…
When was the CVE record for CVE-2026-87759 published?
The CVE record for CVE-2026-87759 was published on September 12, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 14, 2026; the record at its source may have been updated since.
Is CVE-2026-87759 actively exploited?
CVE-2026-87759 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-87759?
CVE-2026-87759 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-87759?
No fix for CVE-2026-87759 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-2026-87759 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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