CVE-2025-49619 Skyvern has a Jinja runtime leak
Authenticated users can achieve remote code execution via server-side template injection in Skyvern workflow blocks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-49619?
CVE-2025-49619 is a high-severity code injection vulnerability in Skyvern, published on 7 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
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).
Weakness: CWE-1336
Which versions are affected by CVE-2025-49619?
3 open source packages ship an affected version, including skyvern.
| Package | Affected | Fixed in |
|---|---|---|
skyvern PyPI | All versions to 0.2.0 | None |
skyvern PyPI | All versions to 0.2.0 | None |
skyvern PyPI | All versions to 0.2.0 | None |
How do I fix CVE-2025-49619?
No fix has been published for CVE-2025-49619 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-49619 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-49619 exists.
Public exploit code: 1 Metasploit module, 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Sources
Also known as GHSA-h92g-3xc3-ww2r, PYSEC-2026-1929.