# CVE-2023-26360: Adobe ColdFusion Deserialization of Untrusted Data Vulnerability

- Exploited (CISA KEV): yes, added 2023-03-15
- Published: 2023-03-23
- CVSS: 8.6 HIGH (v3.1)
- EPSS: 97.3% (100th percentile)
- CWE: CWE-284

Adobe ColdFusion versions 2018 Update 15 (and earlier) and 2021 Update 5 (and earlier) are affected by an Improper Access Control vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction.

## 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 | 2023-07-11 | 110 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2023-07-11 · new · rule 200103305
  > Added: signature 200103305 "Adobe ColdFusion Arbitrary code execution" (Command Execution, risk High), systems: Macromedia ColdFusion. References: CVE-2023-26360.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2023-08-08 · new · rule 200103305
  > Added: signature 200103305 "Adobe ColdFusion Arbitrary code execution" (Command Execution, risk High), systems: Macromedia ColdFusion. References: CVE-2023-26360.
  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: blocked (5 of 5 requests blocked), template CVE-2023-26360, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: blocked (5 of 5 requests blocked), template CVE-2023-26360, 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-2023-26360 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2023-26360