CVE-2025-66090Network attack vector

Contributor-level stored XSS via insufficient output escaping

Published Nov 21, 2025 · Updated Nov 21, 2025

Stored XSS in SKT Skill Bar 2.5 and earlier allows remote authenticated users to inject scripts into WordPress pages and posts. Published materials attribute the flaw to insufficient input sanitization and output escaping but do not identify the affected parameter or function. Contributor-level access is required, and execution occurs when another user views the injected page.

CVSS severity6.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in SKT Skill Bar 2.5 and earlier allows remote authenticated users to inject scripts into WordPress pages and posts. Published materials attribute the flaw to insufficient input sanitization and output escaping but do not identify the affected parameter or function. Contributor-level access is required, and execution occurs when another user views the injected page.

The record

CVE
CVE-2025-66090
Published
Nov 21, 2025
Updated
Nov 21, 2025
Vendor
SKT Web Themes LLC
Product
SKT Skill Bar
Classifications
CWE-79, CAPEC-588, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=<= 2.5 changes=[{"at":"2.6","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SKT Web Themes LLC · SKT Skill Barversion=n/a <=<= 2.5 changes=[{"at":"2.6","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-588DOM-Based XSS
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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