CVE-2026-82447

HighCVSS 8.8/10Last modified Sep 23, 2026

Description

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-1336

Affected software

No affected versions have been published.

Timeline

Published: Aug 29, 2026
Last modified: Sep 23, 2026
NVD status: Deferred

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