CVE-2026-90906— Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3
Quick assessment
Affected
Joomla! Project Joomla! CMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.
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I. Basic Information for CVE-2026-90906
Vulnerability Information
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Vulnerability Title
Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Joomla! Project | Joomla! CMS | 1.5.0-5.4.8 | - |
|
II. Public POCs for CVE-2026-90906
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-90906 (1)
Other References for CVE-2026-90906 (1)
Same Patch Batch · Joomla! Project · 2026-09-29 · 16 CVEs total
| CVE-2026-92222 | 8.9 HIGH | Joomla! Core - [20260909] - Core - SSRF vectors in various core extensions in Joomla 4.0. |
| CVE-2026-92227 | 8.2 HIGH | Joomla! Core - [20260914] - Core - MFA Authentication Bypass through rememberme cookies in |
| CVE-2026-92232 | 7.1 HIGH | Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace charact |
| CVE-2026-92231 | 7.1 HIGH | Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decod |
| CVE-2026-90913 | 7.0 HIGH | Joomla! Core - [20260903] - Core - Improper ACL checks for access level webservice endpoin |
| CVE-2026-92226 | 7.0 HIGH | Joomla! Core - [20260913] - Core - Improper ACL checks for varous webservice edit tasks in |
| CVE-2026-90915 | 7.0 HIGH | Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in |
| CVE-2026-90918 | 6.9 MEDIUM | Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0 |
| CVE-2026-90917 | 6.9 MEDIUM | Joomla! Core - [20260907] - Core - Improper ACL checks in outputs for tagged items in Joom |
| CVE-2026-90907 | 6.9 MEDIUM | Joomla! Core - [20260902] - Core - Unauthorized user account creation via profile.save con |
| CVE-2026-92225 | 5.9 MEDIUM | Joomla! Core - [20260912] - Core - XSS in module list in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 |
| CVE-2026-92224 | 5.9 MEDIUM | Joomla! Core - [20260911] - Core - XSS in link toolbar layout in Joomla 4.0.0-5.4.8, 6.0.0 |
| CVE-2026-90914 | 5.9 MEDIUM | Joomla! Core - [20260904] - Core - XSS in the generic media output layouts in Joomla 4.0.0 |
| CVE-2026-92223 | 5.1 MEDIUM | Joomla! Core - [20260910] - Core - Improper ACL checks for workflow stage changes in Jooml |
| CVE-2026-90916 | 5.1 MEDIUM | Joomla! Core - [20260906] - Core - Improper ACL checks in content history comparison view |
IV. Related Vulnerabilities
Same product: Joomla! CMS
-
CVE-2026-90915
Joomla! Core - [20260905] - Core - Arbitrary directory delet -
CVE-2026-92226
Joomla! Core - [20260913] - Core - Improper ACL checks for v -
CVE-2026-92224
Joomla! Core - [20260911] - Core - XSS in link toolbar layou -
CVE-2026-90907
Joomla! Core - [20260902] - Core - Unauthorized user account -
CVE-2026-90914
Joomla! Core - [20260904] - Core - XSS in the generic media
Same vendor: Joomla! Project
-
CVE-2026-90915
Joomla! Core - [20260905] - Core - Arbitrary directory delet -
CVE-2026-92226
Joomla! Core - [20260913] - Core - Improper ACL checks for v -
CVE-2026-92224
Joomla! Core - [20260911] - Core - XSS in link toolbar layou -
CVE-2026-90907
Joomla! Core - [20260902] - Core - Unauthorized user account -
CVE-2026-90914
Joomla! Core - [20260904] - Core - XSS in the generic media
Same weakness: CWE-79
-
CVE-2026-101127
Joomla Extension - balbooa.com - Unauthenticated upload file -
CVE-2026-100245
Stored XSS on Wikibase Special:SetSiteLink via unescaped sys -
CVE-2026-92224
Joomla! Core - [20260911] - Core - XSS in link toolbar layou -
CVE-2026-100243
Stored XSS in WikiSEO author and image properties on action= -
CVE-2026-90914
Joomla! Core - [20260904] - Core - XSS in the generic media
V. Comments for CVE-2026-90906
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