CVE-2025-49619

Published: Jun 7, 2025Modified: Jun 17, 2026Deferred

8.5

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Exploitability: 3.1 / Impact: 4.7

Source: MITRE (Secondary)

Description

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).

Related CWEs

CWE-1336

Improper Neutralization of Special Elements Used in a Template Engine

The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.

References (4)

https://cristibtz.github.io/posts/CVE-2025-49619/

Source: cve@mitre.org

https://github.com/Skyvern-AI/skyvern/commit/db856cd8433a204c8b45979c70a4da1e119d949d

Source: cve@mitre.org

https://www.exploit-db.com/exploits/52335

Source: cve@mitre.org

https://cristibtz.blog/posts/CVE-2025-49619/

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.