CVE-2026-85129

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-13. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

The Hoo Companion WordPress plugin 1.0.2 does not have any authorisation or validation checks in one of its import features, and does not sanitise the data submitted to it before storing it as the active theme's settings, allowing unauthenticated attackers to inject arbitrary web scripts which will execute for anyone viewing the site, including administrators. The same request destroys the site's existing theme settings.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

September 13, 2026

Last Modified

September 14, 2026

Advisory Details (1)

Auto-updated Sep 13, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Hoo Companion 1.0.2 – Unauthenticated Stored XSS via Theme Settings Import | CVE 2026-85129 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/a50f6ec1-4297-453e-b45f-6fd889b6b0d2/

Vendor Advisories for CVE-2026-85129(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 / 53× 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. 2026-09-25 02:12 UTCGHSA enrichment
  2. 2026-09-24 14:36 UTCEG score recompute
  3. 2026-09-24 14:36 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 02:58 UTCEG score recompute
  6. 2026-09-24 02:58 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 15:22 UTCGHSA enrichment
  9. 2026-09-23 03:47 UTCGHSA enrichment
  10. 2026-09-22 16:12 UTCEG score recompute
  11. 2026-09-22 16:12 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 04:36 UTCEG score recompute
  14. 2026-09-22 04:36 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 17:01 UTCGHSA enrichment
  17. 2026-09-21 04:56 UTCEG score recompute
  18. 2026-09-21 04:56 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 17:09 UTCGHSA enrichment
  21. 2026-09-20 05:32 UTCGHSA enrichment
  22. 2026-09-19 17:57 UTCEG score recompute
  23. 2026-09-19 17:57 UTCGHSA enrichment
  24. 2026-09-19 06:22 UTCEG score recompute
  25. 2026-09-19 06:22 UTCGHSA enrichment
Show 28 more
  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 18:47 UTCGHSA enrichment
  3. 2026-09-18 07:12 UTCGHSA enrichment
  4. 2026-09-17 19:37 UTCEG score recompute
  5. 2026-09-17 19:37 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 08:02 UTCGHSA enrichment
  8. 2026-09-16 20:27 UTCEG score recompute
  9. 2026-09-16 20:26 UTCGHSA enrichment
  10. 2026-09-16 14:09 UTCEPSS rescore
  11. 2026-09-16 08:49 UTCEG score recompute
  12. 2026-09-16 08:49 UTCGHSA enrichment
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-15 20:48 UTCGHSA enrichment
  15. 2026-09-15 08:52 UTCEG score recompute
  16. 2026-09-15 08:52 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 21:17 UTCGHSA enrichment
  20. 2026-09-14 13:29 UTCEG score recompute
  21. 2026-09-14 13:29 UTCGHSA enrichment
  22. 2026-09-14 12:45 UTCEG score recompute
  23. 2026-09-14 12:45 UTCGHSA enrichment
  24. 2026-09-14 08:54 UTCEG score recompute
  25. 2026-09-14 08:54 UTCGHSA enrichment
  26. 2026-09-13 21:19 UTCEG score recompute
  27. 2026-09-13 20:24 UTCEG score recompute
  28. 2026-09-13 20:24 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-85129?
CVE-2026-85129 is a high vulnerability published on September 13, 2026. The Hoo Companion WordPress plugin 1.0.2 does not have any authorisation or validation checks in one of its import features, and does not sanitise the data submitted to it before storing it as the active theme's settings, allowing unauthenticated attackers to inject arbitrary web scripts which will…
When was CVE-2026-85129 disclosed?
CVE-2026-85129 was first published in the National Vulnerability Database on September 13, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85129 actively exploited?
CVE-2026-85129 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 61.2% of all scored CVEs.
What is the CVSS score of CVE-2026-85129?
CVE-2026-85129 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-85129?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85129, 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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