CVE-2026-15038

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

The InfiniteWP Client WordPress plugin before 1.13.6 does not properly verify the site-connection state and the authenticity of requests to its remote-management endpoint on WordPress Multisite installations, allowing unauthenticated attackers to bind their own key, hijack an administrator session, and take over the entire network, leading to remote code execution.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
75(Attend)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 9, 2026

Last Modified

August 10, 2026

Advisory Details (1)

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

InfiniteWP Client < 1.13.6 – Unauthenticated Administrator Account Takeover on Multisite | CVE 2026-15038 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/629d655f-cdb8-4733-81d5-12fa88c32bb6/

Vendor Advisories for CVE-2026-15038(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 52× in last 7d / 88× 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 05:50 UTCGHSA enrichment
  2. 2026-08-21 01:29 UTCEG score recompute
  3. 2026-08-21 01:29 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 21:09 UTCGHSA enrichment
  6. 2026-08-20 16:48 UTCGHSA enrichment
  7. 2026-08-20 12:10 UTCGHSA enrichment
  8. 2026-08-20 07:49 UTCGHSA enrichment
  9. 2026-08-20 03:29 UTCGHSA enrichment
  10. 2026-08-19 23:07 UTCGHSA enrichment
  11. 2026-08-19 18:45 UTCEG score recompute
  12. 2026-08-19 18:45 UTCGHSA enrichment
  13. 2026-08-19 17:03 UTCEPSS rescore
  14. 2026-08-19 13:27 UTCGHSA enrichment
  15. 2026-08-19 09:06 UTCGHSA enrichment
  16. 2026-08-19 04:41 UTCGHSA enrichment
  17. 2026-08-19 00:20 UTCGHSA enrichment
  18. 2026-08-18 19:59 UTCGHSA enrichment
  19. 2026-08-18 15:39 UTCEG score recompute
  20. 2026-08-18 15:39 UTCGHSA enrichment
  21. 2026-08-18 13:48 UTCEPSS rescore
  22. 2026-08-18 11:15 UTCGHSA enrichment
  23. 2026-08-18 06:50 UTCGHSA enrichment
  24. 2026-08-18 02:23 UTCGHSA enrichment
  25. 2026-08-17 21:58 UTCGHSA enrichment
Show 63 more
  1. 2026-08-17 17:37 UTCEG score recompute
  2. 2026-08-17 17:37 UTCGHSA enrichment
  3. 2026-08-17 13:47 UTCEPSS rescore
  4. 2026-08-17 13:15 UTCGHSA enrichment
  5. 2026-08-17 08:54 UTCGHSA enrichment
  6. 2026-08-17 04:34 UTCGHSA enrichment
  7. 2026-08-17 00:13 UTCGHSA enrichment
  8. 2026-08-16 19:52 UTCGHSA enrichment
  9. 2026-08-16 15:31 UTCEG score recompute
  10. 2026-08-16 15:31 UTCGHSA enrichment
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 11:10 UTCGHSA enrichment
  13. 2026-08-16 06:50 UTCGHSA enrichment
  14. 2026-08-16 02:29 UTCEG score recompute
  15. 2026-08-16 02:29 UTCGHSA enrichment
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 22:09 UTCGHSA enrichment
  18. 2026-08-15 17:48 UTCGHSA enrichment
  19. 2026-08-15 13:27 UTCGHSA enrichment
  20. 2026-08-15 09:06 UTCGHSA enrichment
  21. 2026-08-15 04:45 UTCEG score recompute
  22. 2026-08-15 04:45 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-15 00:24 UTCGHSA enrichment
  25. 2026-08-14 20:04 UTCGHSA enrichment
  26. 2026-08-14 15:43 UTCGHSA enrichment
  27. 2026-08-14 11:23 UTCGHSA enrichment
  28. 2026-08-14 07:03 UTCGHSA enrichment
  29. 2026-08-14 02:42 UTCGHSA enrichment
  30. 2026-08-13 22:22 UTCEG score recompute
  31. 2026-08-13 22:22 UTCGHSA enrichment
  32. 2026-08-13 22:00 UTCEPSS rescore
  33. 2026-08-13 18:01 UTCGHSA enrichment
  34. 2026-08-13 13:40 UTCGHSA enrichment
  35. 2026-08-13 09:19 UTCGHSA enrichment
  36. 2026-08-13 04:58 UTCGHSA enrichment
  37. 2026-08-13 00:38 UTCGHSA enrichment
  38. 2026-08-12 20:18 UTCGHSA enrichment
  39. 2026-08-12 15:57 UTCEG score recompute
  40. 2026-08-12 15:57 UTCGHSA enrichment
  41. 2026-08-12 13:50 UTCEPSS rescore
  42. 2026-08-12 11:37 UTCGHSA enrichment
  43. 2026-08-12 07:16 UTCGHSA enrichment
  44. 2026-08-12 02:55 UTCGHSA enrichment
  45. 2026-08-11 22:34 UTCGHSA enrichment
  46. 2026-08-11 18:14 UTCGHSA enrichment
  47. 2026-08-11 13:53 UTCEG score recompute
  48. 2026-08-11 13:53 UTCGHSA enrichment
  49. 2026-08-11 13:42 UTCEPSS rescore
  50. 2026-08-11 09:32 UTCGHSA enrichment
  51. 2026-08-11 05:12 UTCGHSA enrichment
  52. 2026-08-11 00:51 UTCEG score recompute
  53. 2026-08-11 00:51 UTCGHSA enrichment
  54. 2026-08-11 00:00 UTCEPSS rescore
  55. 2026-08-10 20:31 UTCEG score recompute
  56. 2026-08-10 20:31 UTCGHSA enrichment
  57. 2026-08-10 19:45 UTCEG score recompute▲ 9.80
  58. 2026-08-10 19:45 UTCGHSA enrichment
  59. 2026-08-10 19:44 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  60. 2026-08-09 13:46 UTCEPSS rescore
  61. 2026-08-09 06:23 UTCNVD update
  62. 2026-08-09 06:05 UTCEG score recompute
  63. 2026-08-09 06:05 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15038?
CVE-2026-15038 is a critical vulnerability published on August 9, 2026. The InfiniteWP Client WordPress plugin before 1.13.6 does not properly verify the site-connection state and the authenticity of requests to its remote-management endpoint on WordPress Multisite installations, allowing unauthenticated attackers to bind their own key, hijack an administrator session,…
When was CVE-2026-15038 disclosed?
CVE-2026-15038 was first published in the National Vulnerability Database on August 9, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15038 actively exploited?
CVE-2026-15038 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 64.5% of all scored CVEs.
What is the CVSS score of CVE-2026-15038?
CVE-2026-15038 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-15038?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15038, 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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