CVE-2026-66455

MEDIUMPre-NVD 6.06.0—
EchelonGraph scoreMEDIUM confidence

Score 6.0 from GitHub Security Advisory published 2026-08-13. A secondary CVSS source baseline 6.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Subscriber Broken Access Control in ReactPress <= 3.4.0 versions.

CVSS v3
6.0
EG Score
6.0MEDIUMmedium confidence
EG Risk
27
EG Risk 27/100CISA 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
Severity60% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (1)

Auto-updated Aug 13, 2026
Patch available.
generic Patch Available

Broken Access Control in WordPress ReactPress Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/reactpress/vulnerability/wordpress-reactpress-plugin-3-4-0-broken-access-control-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-66455(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 15× in last 7d / 68× 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 133 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-66455?
CVE-2026-66455 is a medium vulnerability published on August 13, 2026. Subscriber Broken Access Control in ReactPress <= 3.4.0 versions.
When was CVE-2026-66455 disclosed?
CVE-2026-66455 was first published on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66455 actively exploited?
CVE-2026-66455 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-66455?
CVE-2026-66455 has a CVSS base score of 6.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-66455?
A fix for CVE-2026-66455 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-66455 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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