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.
History

Tue, 01 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 31 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Skyvern-ai
Skyvern-ai skyvern
Vendors & Products Skyvern-ai
Skyvern-ai skyvern

Sat, 29 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
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.
Title Skyvern before 1.0.45 Sandbox Escape via TextPromptBlock
Weaknesses CWE-1336
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-29T12:05:34.113Z

Updated: 2026-09-01T02:07:46.252Z

Reserved: 2026-08-29T11:37:29.518Z

Link: CVE-2026-82447

cve-icon Vulnrichment

Updated: 2026-09-01T02:07:41.972Z

cve-icon NVD

Status : Received

Published: 2026-08-29T13:16:38.643

Modified: 2026-08-29T13:16:38.643

Link: CVE-2026-82447

cve-icon Redhat

No data.