CVE-2023-23752 — joomla-cms
MEDIUMCVE-2023-23752 is a medium-severity (CVSS 5.3) CWE-284 vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-01-08) — treat it as actively exploited and patch now. A fix is available — see the affected versions and patch details below.
Exploitation Status
Actively exploited in the wild
- Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2024-01-08. Federal agencies were required to remediate by 2024-01-29.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2023-23752.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2023-23752 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 394,415 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.
Description
An issue was discovered in Joomla! 4.0.0 through 4.2.7. An improper access check allows unauthorized access to webservice endpoints.
Affected Products
joomla\!joomlaResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Joomla! v4.2.8 - Unauthenticated information disclosure
by Alexandre ZANNI · Apr 8, 2023
Detection & mitigation playbook
VulnerabilityDetect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Fix
Upgrade the affected component to the fixed release for CVE-2023-23752, or apply your distribution's backported patch — distro builds are often patched at an older version number, so check your vendor's advisory rather than the upstream version alone.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
How to detect CVE-2023-23752
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2023-23752 -u https://target- Template
- Joomla! Webservice - Password Disclosure
- Severity
- medium
- Impact
- The vulnerability can lead to unauthorized access to user passwords, compromising the confidentiality of user accounts.
- Remediation
- Upgrade to Joomla! version 4.2.8 or later.
Template by ProjectDiscovery nuclei-templates (badboycxcc, Sascha Brendel), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2023-23752 in your dependencies?
Find it across , including transitive dependencies.