CVE-2026-48903— Joomla! Framework - [20260519] - Inadequate content filtering within the checkAttribute filter code.
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by CompromiseAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Joomla! Project | Joomla! Framework Filter package | 1.0.0-3.0.5 | affected |
4.0.0-4.0.1 | affected |
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I. Basic Information for CVE-2026-48903
Vulnerability Information
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Vulnerability Title
Joomla! Framework - [20260519] - Inadequate content filtering within the checkAttribute filter code.
Source: NVD (National Vulnerability Database)
Vulnerability Description
Inadequate content filtering within the checkAttribute methods leads to XSS vulnerabilities in various components.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
Joomla! 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joomla!是Joomla!开源的一个自由、开放源代码的内容管理系统。 Joomla! Framework存在跨站脚本漏洞，该漏洞源于checkAttribute方法中内容过滤不足，导致各种组件存在跨站脚本漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Joomla! Project | Joomla! Framework Filter package | 1.0.0-3.0.5 | - |
II. Public POCs for CVE-2026-48903
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Vendor Advisories for CVE-2026-48903 (1)
Same Patch Batch · Joomla! Project · 2026-05-26 · 20 CVEs total
| CVE-2026-48904 | Joomla! Core - [20260514] - Privilege escalation through com_users webservice endpoints | |
| CVE-2026-30894 | Joomla! Core - [20260503] - XSS in com_contenthistory | |
| CVE-2026-30895 | Joomla! Core - [20260504] - XSS in readmore links | |
| CVE-2026-40383 | Joomla! Core - [20260509] - LFI in HTMLView layout parameter | |
| CVE-2026-40384 | Joomla! Core - [20260510] - Path traversal in com_media webservice endpoint | |
| CVE-2026-35221 | Joomla! Core - [20260506] - Authenticated blind SQLi in com_finder | |
| CVE-2026-35222 | Joomla! Core - [20260507] - Authenticated blind SQLi in com_tags | |
| CVE-2026-35220 | Joomla! Core - [20260505] - CSRF in user activation endpoint | |
| CVE-2026-35223 | Joomla! Core - [20260508] - Improper access check in com_config webservice endpoints | |
| CVE-2026-48905 | Joomla! Framework - [20260520] - Inadequate content filtering within the cleanAttributes f | |
| CVE-2026-25901 | Joomla! Core - [20260502] - XSS in com_associations | |
| CVE-2026-48897 | Joomla! Core - [20260512] - MFA Authentication Bypass | |
| CVE-2026-48896 | Joomla! Core - [20260511] - MFA Authentication Bypass | |
| CVE-2026-48898 | Joomla! Core - [20260513] - Privilege escalation through com_users batch task | |
| CVE-2026-48899 | Joomla! Core - [20260515] - Incorrect Access Control in sample data plugins | |
| CVE-2026-48902 | Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset | |
| CVE-2026-48900 | Joomla! Core - [20260516] - Incorrect Access Control in com_scheduler | |
| CVE-2026-48901 | Joomla! Core - [20260517] - Incorrect Cache Key Construction for InputFilter objects | |
| CVE-2026-25900 | Joomla! Core - [20260501] - XSS in feed modules |
IV. Related Vulnerabilities
Same vendor: Joomla! Project
- CVE-2026-35221
Joomla! Core - [20260506] - Authenticated blind SQLi in com_ - CVE-2026-48896
Joomla! Core - [20260511] - MFA Authentication Bypass - CVE-2026-35220
Joomla! Core - [20260505] - CSRF in user activation endpoint - CVE-2026-40383
Joomla! Core - [20260509] - LFI in HTMLView layout parameter - CVE-2026-35222
Joomla! Core - [20260507] - Authenticated blind SQLi in com_
Same weakness: CWE-79
- CVE-2026-32208
Microsoft Edge (Chromium-based) Spoofing Vulnerability - CVE-2026-12621
Cross-Site Scripting (XSS) Vulnerability in Password Reset R - CVE-2026-12619
GridTime™ 3000 GNSS Time Server CSRF to XSS - CVE-2026-12430
Blocksy Companion <= 2.1.45 - Authenticated (Editor+) Stored - CVE-2026-12157
BetterDocs <= 4.5.3 - Authenticated (Contributor+) Stored Cr
V. Comments for CVE-2026-48903
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