CVE-2026-27366

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

Unauthenticated Broken Access Control in MainWP Child <= 6.1.1 versions.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 29, 2026

Advisory Details (1)

Auto-updated Jun 29, 2026
No patch confirmed yet.
generic

Broken Access Control in WordPress MainWP Child Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/mainwp-child/vulnerability/wordpress-mainwp-child-plugin-6-1-1-broken-access-control-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-27366(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 5× 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.

Showing the most recent 100 of 221 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-27366?
CVE-2026-27366 is a high vulnerability published on June 25, 2026. Unauthenticated Broken Access Control in MainWP Child <= 6.1.1 versions.
When was CVE-2026-27366 disclosed?
CVE-2026-27366 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27366 actively exploited?
CVE-2026-27366 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 76.1% of all scored CVEs.
What is the CVSS score of CVE-2026-27366?
CVE-2026-27366 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-27366?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27366, 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

Explore the affected products and dependency analysis for CVE-2026-27366

Explore →

Is Your Infrastructure Affected by CVE-2026-27366?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs