CVE-2026-23899: CWE-284 Improper Access Control in Joomla! Project Joomla! CMS
CVE-2026-23899 is a high-severity vulnerability in Joomla! CMS versions 4. 0. 0 through 5. 4. 3 and 6. 0. 0 through 6. 0. 3.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-23899) in Joomla! CMS arises from an improper access check (CWE-284) that permits unauthorized access to webservice endpoints. Affected versions include 4.0.0 to 5.4.3 and 6.0.0 to 6.0.3. The CVSS 4.0 base score is 8.6, indicating high severity, with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The vulnerability impacts confidentiality, integrity, and availability with high impact. No patch or vendor advisory is currently available to confirm remediation status.
Potential Impact
Unauthorized access to webservice endpoints can lead to exposure of sensitive data or unauthorized operations within Joomla! CMS installations running affected versions. The high CVSS score reflects significant risk to confidentiality, integrity, and availability. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Joomla! Project vendor advisory for current remediation guidance. Until an official fix is released, restrict access to Joomla! webservice endpoints through network controls or other compensating controls to limit exposure.
CVE-2026-23899: CWE-284 Improper Access Control in Joomla! Project Joomla! CMS
Description
CVE-2026-23899 is a high-severity vulnerability in Joomla! CMS versions 4. 0. 0 through 5. 4. 3 and 6. 0. 0 through 6. 0. 3.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-23899) in Joomla! CMS arises from an improper access check (CWE-284) that permits unauthorized access to webservice endpoints. Affected versions include 4.0.0 to 5.4.3 and 6.0.0 to 6.0.3. The CVSS 4.0 base score is 8.6, indicating high severity, with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The vulnerability impacts confidentiality, integrity, and availability with high impact. No patch or vendor advisory is currently available to confirm remediation status.
Potential Impact
Unauthorized access to webservice endpoints can lead to exposure of sensitive data or unauthorized operations within Joomla! CMS installations running affected versions. The high CVSS score reflects significant risk to confidentiality, integrity, and availability. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Joomla! Project vendor advisory for current remediation guidance. Until an official fix is released, restrict access to Joomla! webservice endpoints through network controls or other compensating controls to limit exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Joomla
- Date Reserved
- 2026-01-17T04:38:44.009Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69cce78be6bfc5ba1dbc6720
Added to database: 4/1/2026, 9:38:19 AM
Last enriched: 4/10/2026, 12:16:15 AM
Last updated: 5/15/2026, 10:33:24 AM
Views: 166
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