# CVE-2025-48827: vBulletin vBulletin

- Exploited (CISA KEV): no
- Published: 2025-05-27
- CVSS: 10 CRITICAL (v3.1)
- EPSS: 75.6% (100th percentile)
- CWE: CWE-424

vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025.

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-06-16 | 20 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2025-08-15 | 80 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-06-16 · new · rule 2672b175a25548aa8e0107b12e1648d2 · default Block
  > vBulletin - Remote Code Execution - CVE:CVE-2025-48827, CVE:CVE-2025-48828. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-06-16-waf-release/

### F5

- 2025-08-15 · new · rule 200204021
  > Added: signature 200204021 "vBulletin replaceAdTemplate Remote Code Execution" (Server Side Code Injection, risk High), systems: PHP. References: CVE-2025-48828, CVE-2025-48827.
  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 1 requests blocked), template CVE-2025-48827, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2025-48827, 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-2025-48827 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-48827