CVE-2026-15459

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-06. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.0. On sites not yet connected to the WPMU DEV Hub — the default state after installation — the site API key that keys the WDP-AUTH request signature is empty, making the signature verified by validate_hash() trivially forgeable; version 5.0.0 additionally removed the replay check in validate_nonce(), and the remote handler is bound to the public init hook with no capability check. This makes it possible for unauthenticated attackers to invoke privileged Hub actions — including installing and activating a plugin from an attacker-supplied URL (resulting in remote code execution), deleting plugins and themes, upgrading WordPress core, or logging in as an administrator via SSO. Sites connected to a WPMU DEV account, which have a non-empty 64-character API key, are not affected.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 12, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

WPMU DEV Dashboard Plugin For Site Management & Control

https://wpmudev.com/project/wpmu-dev-dashboard/#changelog_all

Vendor Advisories for CVE-2026-15459(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 28× in last 7d / 63× 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.

  1. 2026-08-21 06:11 UTCEG score recompute
  2. 2026-08-21 06:11 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 17:42 UTCGHSA enrichment
  5. 2026-08-20 05:13 UTCEG score recompute
  6. 2026-08-20 05:13 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 16:42 UTCGHSA enrichment
  9. 2026-08-19 04:13 UTCGHSA enrichment
  10. 2026-08-18 15:43 UTCEG score recompute
  11. 2026-08-18 15:43 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 01:54 UTCEG score recompute
  14. 2026-08-18 01:54 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 13:26 UTCGHSA enrichment
  17. 2026-08-17 00:57 UTCEG score recompute
  18. 2026-08-17 00:57 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 12:28 UTCEG score recompute
  21. 2026-08-16 12:28 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-16 00:00 UTCGHSA enrichment
  24. 2026-08-15 11:31 UTCEG score recompute
  25. 2026-08-15 11:31 UTCGHSA enrichment
Show 38 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-14 23:02 UTCGHSA enrichment
  3. 2026-08-14 10:34 UTCGHSA enrichment
  4. 2026-08-13 22:04 UTCEG score recompute
  5. 2026-08-13 22:04 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 09:36 UTCGHSA enrichment
  8. 2026-08-12 21:07 UTCEG score recompute
  9. 2026-08-12 21:07 UTCGHSA enrichment
  10. 2026-08-12 13:50 UTCEPSS rescore
  11. 2026-08-12 09:48 UTCGHSA enrichment
  12. 2026-08-11 21:20 UTCEG score recompute
  13. 2026-08-11 21:19 UTCGHSA enrichment
  14. 2026-08-11 13:42 UTCEPSS rescore
  15. 2026-08-11 08:50 UTCEG score recompute
  16. 2026-08-11 08:50 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 20:22 UTCGHSA enrichment
  19. 2026-08-10 07:53 UTCGHSA enrichment
  20. 2026-08-09 19:25 UTCEG score recompute
  21. 2026-08-09 19:25 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 06:56 UTCGHSA enrichment
  24. 2026-08-08 18:28 UTCEG score recompute
  25. 2026-08-08 18:28 UTCGHSA enrichment
  26. 2026-08-08 16:37 UTCEPSS rescore
  27. 2026-08-08 05:59 UTCGHSA enrichment
  28. 2026-08-07 17:31 UTCEG score recompute
  29. 2026-08-07 17:31 UTCGHSA enrichment
  30. 2026-08-07 05:02 UTCGHSA enrichment
  31. 2026-08-06 16:33 UTCEG score recompute
  32. 2026-08-06 16:33 UTCGHSA enrichment
  33. 2026-08-06 15:33 UTCEG score recompute
  34. 2026-08-06 15:33 UTCGHSA enrichment
  35. 2026-08-06 13:46 UTCEPSS rescore
  36. 2026-08-06 06:17 UTCEG score recompute
  37. 2026-08-06 05:30 UTCEG score recompute
  38. 2026-08-06 05:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15459?
CVE-2026-15459 is a high vulnerability published on August 6, 2026. The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.0. On sites not yet connected to the WPMU DEV Hub — the default state after installation — the site API key that keys the WDP-AUTH request signature is empty, making the…
When was CVE-2026-15459 disclosed?
CVE-2026-15459 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15459 actively exploited?
CVE-2026-15459 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 58.6% of all scored CVEs.
What is the CVSS score of CVE-2026-15459?
CVE-2026-15459 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-15459?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15459, 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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