CVE-2026-66683

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-08-06. A secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Unauthenticated Sensitive Data Exposure in Custom CSS and JavaScript <= 2.0.16 versions.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100CISA 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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 6, 2026

Last Modified

August 12, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
Patch available.
generic Patch Available

Sensitive Data Exposure in WordPress Custom CSS and JavaScript Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/custom-css-and-javascript/vulnerability/wordpress-custom-css-and-javascript-plugin-2-0-16-sensitive-data-exposure-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-66683(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 / 62× 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 143 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-66683?
CVE-2026-66683 is a medium vulnerability published on August 6, 2026. Unauthenticated Sensitive Data Exposure in Custom CSS and JavaScript <= 2.0.16 versions.
When was CVE-2026-66683 disclosed?
CVE-2026-66683 was first published 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-2026-66683 actively exploited?
CVE-2026-66683 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-66683?
CVE-2026-66683 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-66683?
A fix for CVE-2026-66683 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-66683 are linked in the Vendor Advisories panel on this page.

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