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CVE-2026-82447— Skyvern before 1.0.45 Sandbox Escape via TextPromptBlock

Quick assessment

Affected
Skyvern-AI skyvern
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Skyvern是Skyvern组织开源的一款基于AI的浏览器自动化代理。 Skyvern 1.0.45之前版本存在代码注入漏洞，该漏洞源于TextPromptBlock中的提示词被渲染两次（先经过沙箱Jinja环境，再经过非沙箱环境），可能导致攻击者通过工作流参数或上游块输出注入恶意Jinja模板语法，以服务器进程权限执行任意代码。

CVSS 8.8 · High EPSS 0.78% · P55

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Skyvern-AI skyvern 0.2.1< 1.0.45 affected
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I. Basic Information for CVE-2026-82447

Vulnerability Information
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Vulnerability Title
Skyvern before 1.0.45 Sandbox Escape via TextPromptBlock
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1336
Source: CVE Program / CVE List V5
Vulnerability Title
Skyvern 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Skyvern是Skyvern组织开源的一款基于AI的浏览器自动化代理。 Skyvern 1.0.45之前版本存在代码注入漏洞，该漏洞源于TextPromptBlock中的提示词被渲染两次（先经过沙箱Jinja环境，再经过非沙箱环境），可能导致攻击者通过工作流参数或上游块输出注入恶意Jinja模板语法，以服务器进程权限执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Skyvern-AI skyvern 0.2.1 ~ 1.0.45 -

II. Public POCs for CVE-2026-82447

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-82447

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Patches & Fixes for CVE-2026-82447 (1)

Vendor Advisories for CVE-2026-82447 (1)

Vendor Pages for CVE-2026-82447 (1)

Other References for CVE-2026-82447 (1)

IV. Related Vulnerabilities

Same product: skyvern
Same weakness: CWE-1336

V. Comments for CVE-2026-82447

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