What’s Vulnerable › Vulnerabilities

CVE-2021-23123: [20210101] - Core - com_modules exposes module names

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-12 · updated 2026-06-17
• Weakness: CWE-862

Description

An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.

Affected products

• Joomla!: from 3.0.0 through 3.9.23

References

• https://developer.joomla.org/security-centre/836-20210101-core-com-modules-exposes-module-names.html
• https://developer.joomla.org/security-centre/836-20210101-core-com-modules-exposes-module-names.html

Get alerted when CVE-2021-23123 or the next vulnerability affects your stack