CVE-2021-26035— [20210701] - Core - XSS in JForm Rules field
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I. Basic Information for CVE-2021-26035
Vulnerability Information
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Vulnerability Title
[20210701] - Core - XSS in JForm Rules field
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue was discovered in Joomla! 3.0.0 through 3.9.27. Inadequate escaping in the rules field of the JForm API leads to a XSS vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Joomla! 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joomla 是美国Open Source Matters团队的一套使用PHP和MySQL开发的开源、跨平台的内容管理系统(CMS)。 Joomla! CMS 3.0.0 到 3.9.27版本存在跨站脚本漏洞，该漏洞源于对 JForm API 的 Rules 字段转义不充分。
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! CMS | 3.0.0-3.9.27 | - |
II. Public POCs for CVE-2021-26035
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://developer.joomla.org/security-centre/856-20210701-core-xss-in-jform-rules-field.htmlx_refsource_MISCvendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-26035
Same Patch Batch · Joomla! Project · 2021-07-07 · 5 CVEs total
| CVE-2021-26036 | [20210702] - Core - DoS through usergroup table manipulation | |
| CVE-2021-26037 | [20210703] - Core - Lack of enforced session termination | |
| CVE-2021-26038 | [20210704] - Core - Privilege escalation through com_installer | |
| CVE-2021-26039 | [20210705] - Core - XSS in com_media imagelist |
IV. Related Vulnerabilities
Same product: Joomla! CMS
- CVE-2026-21630
Joomla! Core - [20260302] - SQL injection in com_content art - CVE-2026-23898
Joomla! Core - [20260305] - Arbitrary file deletion in com_j - CVE-2026-21629
Joomla! Core - [20260301] - ACL hardening in com_ajax - CVE-2026-23899
Joomla! Core - [20260306] - Improper access check in webserv - CVE-2026-21631
Joomla! Core - [20260303] - XSS vector in com_associations c
Same vendor: Joomla! Project
- CVE-2026-21630
Joomla! Core - [20260302] - SQL injection in com_content art - CVE-2026-23898
Joomla! Core - [20260305] - Arbitrary file deletion in com_j - CVE-2026-21629
Joomla! Core - [20260301] - ACL hardening in com_ajax - CVE-2026-23899
Joomla! Core - [20260306] - Improper access check in webserv - CVE-2026-21631
Joomla! Core - [20260303] - XSS vector in com_associations c
V. Comments for CVE-2021-26035
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