Skyvern through 0.1.85 is vulnerable to server-side template injection (SSTI) in the…
Priority HIGH 70CWE-1336Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1336.
Summary
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).
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.21806 97th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Skyvern | Skyvern | up to 0.1.85 | — | No fix listed | CNA |
| — | skyvern (PyPI) | up to 0.2.0 | — | No fix listed | GHSA-h92g-3xc3-ww2r |
- Skyvern VendorSkyvern Affected up to 0.1.85 Fixed in — No fix listed CNA
- skyvern (PyPI) Vendor— Affected up to 0.2.0 Fixed in — No fix listed GHSA-h92g-3xc3-ww2r
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-49619
- 2026-10-03 Alias added: GHSA-h92g-3xc3-ww2r
References
Other 6
- https://github.com/Skyvern-AI/skyvern/commit/db856cd8433a204c8b45979c70a4da1e119d949d
- https://cristibtz.github.io/posts/CVE-2025-49619/
- https://www.exploit-db.com/exploits/52335
- https://cristibtz.blog/posts/CVE-2025-49619
- https://cristibtz.github.io/posts/CVE-2025-49619
- https://github.com/Skyvern-AI/skyvern
Sources
- CVE-2025-49619 · CVE Program
- CVE-2025-49619 · NVD
- FIRST EPSS
- GHSA-h92g-3xc3-ww2r · GitHub Advisory Database · CC BY 4.0
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