CVE-2026-66453

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-13. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
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: None knownExposed: 0

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

Unauthenticated Broken Authentication in Salon booking system <= 10.30.26 versions.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (1)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

Broken Authentication in WordPress Salon booking system Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/salon-booking-system/vulnerability/wordpress-salon-booking-system-plugin-10-30-26-broken-authentication-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-66453(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 46× in last 7d / 201× 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 260 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-66453?
CVE-2026-66453 is a critical vulnerability published on August 13, 2026. Unauthenticated Broken Authentication in Salon booking system <= 10.30.26 versions.
When was CVE-2026-66453 disclosed?
CVE-2026-66453 was first published in the National Vulnerability Database 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-2026-66453 actively exploited?
CVE-2026-66453 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 66.8% of all scored CVEs.
What is the CVSS score of CVE-2026-66453?
CVE-2026-66453 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-66453?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66453, 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.

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