CVE-2026-66683

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH 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%CVSS: 5.3Exploit: None knownExposed: 0

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

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

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

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 17× in last 7d / 41× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 12:06 UTCEG score recompute
  3. 2026-08-20 12:06 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 09:47 UTCEG score recompute
  6. 2026-08-19 09:47 UTCGHSA enrichment
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-18 07:46 UTCEG score recompute
  9. 2026-08-18 07:46 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 05:45 UTCEG score recompute
  12. 2026-08-17 05:45 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 03:10 UTCEG score recompute
  15. 2026-08-16 03:10 UTCGHSA enrichment
  16. 2026-08-15 01:30 UTCEPSS rescore
  17. 2026-08-15 01:09 UTCGHSA enrichment
  18. 2026-08-13 23:07 UTCEG score recompute
  19. 2026-08-13 23:07 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-12 21:05 UTCEG score recompute
  22. 2026-08-12 21:05 UTCGHSA enrichment
  23. 2026-08-12 13:51 UTCEPSS rescore
  24. 2026-08-12 08:29 UTCEG score recompute
  25. 2026-08-12 08:29 UTCGHSA enrichment
Show 16 more
  1. 2026-08-11 06:27 UTCEG score recompute
  2. 2026-08-11 06:27 UTCGHSA enrichment
  3. 2026-08-11 00:00 UTCEPSS rescore
  4. 2026-08-10 04:26 UTCEG score recompute
  5. 2026-08-10 04:26 UTCGHSA enrichment
  6. 2026-08-09 13:47 UTCEPSS rescore
  7. 2026-08-09 02:25 UTCEG score recompute
  8. 2026-08-09 02:25 UTCGHSA enrichment
  9. 2026-08-08 16:37 UTCEPSS rescore
  10. 2026-08-08 00:24 UTCEG score recompute
  11. 2026-08-08 00:24 UTCGHSA enrichment
  12. 2026-08-06 22:23 UTCEG score recompute
  13. 2026-08-06 22:23 UTCGHSA enrichment
  14. 2026-08-06 15:27 UTCEG score recompute
  15. 2026-08-06 14:42 UTCEG score recompute
  16. 2026-08-06 14:41 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 84.6% of all scored CVEs.
What is the CVSS score of CVE-2026-66683?
CVE-2026-66683 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-66683?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66683, 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-2026-66683

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