CVE-2026-48899— Joomla! Core - [20260515] - Incorrect Access Control in sample data plugins
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! CMS是Joomla!开源的一个内容管理系统。 Joomla! CMS存在访问控制错误漏洞，该漏洞源于访问检查不当，导致通过com_users批量任务实现权限提升。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Joomla! Project | Joomla! CMS | 4.0.0-5.4.5 |
affected |
6.0.0-6.1.0 |
affected |
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I. Basic Information for CVE-2026-48899
Vulnerability Information
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Vulnerability Title
Joomla! Core - [20260515] - Incorrect Access Control in sample data plugins
Source: CVE Program / CVE List V5
Vulnerability Description
An improper access check allows privilege escalation through the com_users batch task.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Joomla! CMS 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joomla! CMS是Joomla!开源的一个内容管理系统。 Joomla! CMS存在访问控制错误漏洞，该漏洞源于访问检查不当，导致通过com_users批量任务实现权限提升。
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 | 4.0.0-5.4.5 | - |
|
II. Public POCs for CVE-2026-48899
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-48899 (1)
Same Patch Batch · Joomla! Project · 2026-05-26 · 20 CVEs total
| CVE-2026-48905 | Joomla! Framework - [20260520] - Inadequate content filtering within the cleanAttributes f | |
| 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-2026-48903 | Joomla! Framework - [20260519] - Inadequate content filtering within the checkAttribute fi | |
| CVE-2026-25901 | Joomla! Core - [20260502] - XSS in com_associations | |
| CVE-2026-48904 | Joomla! Core - [20260514] - Privilege escalation through com_users webservice endpoints | |
| 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-2026-48902 | 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 product: Joomla! CMS
-
CVE-2026-71573
Joomla! Core - [20260802] - Improper CORS origin validation -
CVE-2026-72531
Joomla! Core - [20260804] - Improper ACL checks for custom f -
CVE-2026-73336
Joomla! Core - [20260806] - XSS through schema.org outputs i -
CVE-2026-73372
Joomla! Core - [20260809] - Improper ACL checks when injecti -
CVE-2026-71572
Joomla! Core - [20260801] - Response header injection in dow
Same vendor: Joomla! Project
-
CVE-2026-71573
Joomla! Core - [20260802] - Improper CORS origin validation -
CVE-2026-72531
Joomla! Core - [20260804] - Improper ACL checks for custom f -
CVE-2026-73336
Joomla! Core - [20260806] - XSS through schema.org outputs i -
CVE-2026-73372
Joomla! Core - [20260809] - Improper ACL checks when injecti -
CVE-2026-71572
Joomla! Core - [20260801] - Response header injection in dow
Same weakness: CWE-284
-
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CVE-2026-76597
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CVE-2026-76598
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CVE-2026-76596
Joomla Extension - fabrikar.com - Unauthenticated table trun -
CVE-2026-76600
Joomla Extension - fabrikar.com - Unauthenticated deletion o
V. Comments for CVE-2026-48899
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