# CVE-2025-49619: Skyvern Skyvern

- Exploited (CISA KEV): no
- Published: 2025-06-07
- CVSS: 8.5 HIGH (v3.1)
- EPSS: 20.4% (97th percentile)
- CWE: CWE-1336

Skyvern through 0.1.85 is vulnerable to server-side template injection (SSTI) in the Prompt field of workflow blocks such as the Navigation v2 Block. Improper sanitization of Jinja2 template input allows authenticated users to inject crafted expressions that are evaluated on the server, leading to blind remote code execution (RCE).

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-09-22 | 107 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-09-22 · new · rule 9f1c8d4cbf3848dbb940771bc5ced231 · default Block
  > Skyvern - Remote Code Execution - CVE:CVE-2025-49619. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-09-22-waf-release/

"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-2025-49619 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-49619