CVE-2026-66663

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-06. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Unauthenticated Cross Site Scripting (XSS) in WP Data Access <= 5.5.79 versions.

CVSS v3
7.1
EG Score
7.1(high)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 12, 2026

References (1)

Vendor Advisories for CVE-2026-66663(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 27× in last 7d / 58× 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 18:35 UTCGHSA enrichment
  2. 2026-08-20 06:45 UTCGHSA enrichment
  3. 2026-08-19 18:54 UTCEG score recompute
  4. 2026-08-19 18:54 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-19 07:04 UTCGHSA enrichment
  7. 2026-08-18 19:13 UTCEG score recompute
  8. 2026-08-18 19:13 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 07:22 UTCGHSA enrichment
  11. 2026-08-17 19:32 UTCEG score recompute
  12. 2026-08-17 19:32 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 07:41 UTCGHSA enrichment
  15. 2026-08-16 19:51 UTCEG score recompute
  16. 2026-08-16 19:51 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 08:00 UTCEG score recompute
  19. 2026-08-16 08:00 UTCGHSA enrichment
  20. 2026-08-15 20:10 UTCGHSA enrichment
  21. 2026-08-15 08:20 UTCEG score recompute
  22. 2026-08-15 08:20 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-14 20:29 UTCGHSA enrichment
  25. 2026-08-14 08:37 UTCEG score recompute
Show 33 more
  1. 2026-08-14 08:37 UTCGHSA enrichment
  2. 2026-08-13 22:00 UTCEPSS rescore
  3. 2026-08-13 20:46 UTCGHSA enrichment
  4. 2026-08-13 08:55 UTCGHSA enrichment
  5. 2026-08-12 21:05 UTCGHSA enrichment
  6. 2026-08-12 20:25 UTCEG score recompute
  7. 2026-08-12 20:25 UTCGHSA enrichment
  8. 2026-08-12 13:51 UTCEPSS rescore
  9. 2026-08-12 08:35 UTCGHSA enrichment
  10. 2026-08-11 20:45 UTCEG score recompute
  11. 2026-08-11 20:45 UTCGHSA enrichment
  12. 2026-08-11 08:55 UTCEG score recompute
  13. 2026-08-11 08:55 UTCGHSA enrichment
  14. 2026-08-11 00:00 UTCEPSS rescore
  15. 2026-08-10 21:05 UTCGHSA enrichment
  16. 2026-08-10 09:14 UTCGHSA enrichment
  17. 2026-08-09 21:24 UTCEG score recompute
  18. 2026-08-09 21:24 UTCGHSA enrichment
  19. 2026-08-09 13:47 UTCEPSS rescore
  20. 2026-08-09 09:34 UTCGHSA enrichment
  21. 2026-08-08 21:44 UTCEG score recompute
  22. 2026-08-08 21:44 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-08 09:53 UTCGHSA enrichment
  25. 2026-08-07 22:03 UTCEG score recompute
  26. 2026-08-07 22:03 UTCGHSA enrichment
  27. 2026-08-07 10:13 UTCEG score recompute
  28. 2026-08-07 10:13 UTCGHSA enrichment
  29. 2026-08-06 22:23 UTCEG score recompute
  30. 2026-08-06 22:23 UTCGHSA enrichment
  31. 2026-08-06 15:27 UTCEG score recompute
  32. 2026-08-06 14:42 UTCEG score recompute
  33. 2026-08-06 14:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66663?
CVE-2026-66663 is a high vulnerability published on August 6, 2026. Unauthenticated Cross Site Scripting (XSS) in WP Data Access <= 5.5.79 versions.
When was CVE-2026-66663 disclosed?
CVE-2026-66663 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-2026-66663 actively exploited?
CVE-2026-66663 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 90.9% of all scored CVEs.
What is the CVSS score of CVE-2026-66663?
CVE-2026-66663 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-66663?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66663, 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

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