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.
CVSS 4.0HIGH 8.7·Network·Low privileges·No interaction·EPSS 0.00775·Published 2026-08-29·Fixed in 1.0.45CWE-1336
Skyvern through 1.0.56 contains a sandbox bypass vulnerability that allows authenticated users to execute code by reconstructing functions from raw bytecode with types.CodeType.