# CVE-2023-23752: Joomla! Improper Access Control Vulnerability

- Exploited (CISA KEV): yes, added 2024-01-08
- Published: 2023-02-16
- CVSS: 5.3 MEDIUM (v3.1)
- EPSS: 99.8% (100th percentile)
- CWE: CWE-284

An issue was discovered in Joomla! 4.0.0 through 4.2.7. An improper access check allows unauthorized access to webservice endpoints.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2023-03-14 | 26 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2023-03-14 · new · rule 200010472
  > Added: signature 200010472 "Joomla! webservice endpoint unauthorized access" (Predictable Resource Location, risk Medium), systems: PHP, Joomla. References: CVE-2023-23752.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2023-05-09 · new · rule 200014027
  > Added: signature 200014027 "Joomla! Webservice Unauthorized Access" (Abuse of Functionality, risk Medium), systems: PHP, Joomla. References: CVE-2023-23752.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2025-12-03 · updated · rule 200014027
  > Updated: signature 200014027 "Joomla! Webservice Unauthorized Access" (Abuse of Functionality, risk Medium), systems: PHP, Joomla. References: CVE-2023-23752.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 2 requests blocked), template CVE-2023-23752, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 2 requests blocked), template CVE-2023-23752, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2023-23752 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2023-23752