Vulnerability · Published Jun 7, 2025 · Assigned by mitre
CVE-2025-49619
High 8.5
In plain English
A high-severity security flaw in Skyvern from Skyvern. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 21.8% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code.
Official 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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | skyvern | no fix listed | GHSA-h92g-3xc3-ww2r |
| PyPI | skyvern | no fix listed | PYSEC-2026-1929 |
Affected products (as reported)
Weakness: CWE-1336 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N