CVE Catalog

CVE-2026-82447

HighCVSS 8.8
Published: Translated: NVD NIST

Summary

Skyvern before version 1.0.45 contains a sandbox escape vulnerability in TextPromptBlock that renders prompts twice, first through a sandboxed Jinja environment and then through an unsandboxed environment. Attackers can inject malicious Jinja template syntax through workflow parameters or upstream block output to execute arbitrary code with server process privileges.

Risk Assessment

Sandbox escape can lead to arbitrary code execution on the server, potentially resulting in full system compromise and data breach.

Recommendation

Update Skyvern to version 1.0.45 or later, which includes the fix; avoid using untrusted input in templates.

Related vulnerabilities

Original NVD description (English source)

Skyvern before 1.0.45 contains a sandbox escape vulnerability in TextPromptBlock that renders prompts twice, first through a sandboxed Jinja environment and then through an unsandboxed environment. Attackers can inject malicious Jinja template syntax through workflow parameters or upstream block output to execute arbitrary code with server process privileges.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS