CVE-2026-9066

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-07-23. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 0

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

The WP Compress WordPress plugin before 7.10.04 does not validate the value of a query parameter that controls the asset CDN host before using it to build the URLs of JavaScript files emitted on the page, leading to Reflected XSS. When a visitor follows a crafted link, the WP Compress WordPress plugin before 7.10.04's loader injects script elements pointing to an attacker-controlled origin, which lets the attacker execute arbitrary JavaScript in the visitor's session on the target site.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

July 23, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jul 23, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

WP Compress < 7.10.04 – Reflected XSS via test_zone | CVE 2026-9066 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/133e2ca0-8cde-4b59-b680-0ddf95004625/

Vendor Advisories for CVE-2026-9066(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 18× in last 7d / 84× 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 108 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9066?
CVE-2026-9066 is a medium vulnerability published on July 23, 2026. The WP Compress WordPress plugin before 7.10.04 does not validate the value of a query parameter that controls the asset CDN host before using it to build the URLs of JavaScript files emitted on the page, leading to Reflected XSS. When a visitor follows a crafted link, the WP Compress WordPress…
When was CVE-2026-9066 disclosed?
CVE-2026-9066 was first published in the National Vulnerability Database on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9066 actively exploited?
CVE-2026-9066 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 83.5% of all scored CVEs.
What is the CVSS score of CVE-2026-9066?
CVE-2026-9066 has a CVSS v3.1 base score of 6.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-9066?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9066, 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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