CVE-2023-23750 — An issue was discovered in Joomla! 4

An issue was discovered in Joomla! 4.0.0 through 4.2.6. A missing token check causes a CSRF vulnerability in the handling of post-installation messages.

01What is this vulnerability?

An issue was discovered in Joomla! 4.0.0 through 4.2.6. A missing token check causes a CSRF vulnerability in the handling of post-installation messages.

02Affected products

Vendor	Product	Versions
Joomla! Project	Joomla! CMS	4.0.0-4.2.6

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-02-01T21:12:36.067Z
• Last modified: 2025-03-29T04:35:17.502Z

09References

• developer.joomla.org — https://developer.joomla.org/security-centre/890-20230101-core-csrf-within-post-…