# CVE-2024-8926: PHP CGI Parameter Injection Vulnerability (CVE-2024-4577 bypass)

- Exploited (CISA KEV): no
- Published: 2024-10-08
- CVSS: 8.1 HIGH (v3.1)
- EPSS: 3.7% (90th percentile)
- CWE: CWE-78

In PHP versions 8.1.* before 8.1.30, 8.2.* before 8.2.24, 8.3.* before 8.3.12, when using a certain non-standard configurations of Windows codepages, the fixes for  CVE-2024-4577 https://github.com/advisories/GHSA-vxpp-6299-mxw3  may still be bypassed and the same command injection related to Windows "Best Fit" codepage behavior can be achieved. This may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.

## 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 | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2025-12-03 | 421 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2025-12-03 · new · rule 200103658
  > Added: signature 200103658 "PHP-CGI Shell Code Injection (quotes conversion)" (Command Execution, risk High), systems: PHP, CGI. References: CVE-2024-8926.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"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-2024-8926 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2024-8926