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CVE-2026-90813— cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand validate before canonicalize

Quick assessment

Affected
cosmicstack-labs mercury-agent
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.

在 cosmicstack-labs 的 mercury-agent（版本 ≤ 1.1.13）中检测到一个漏洞。受影响的组件是 Shell 命令执行模块，具体位于文件 中的 函数。由于函数执行顺序错误（在规范化之前进行验证），导致行为异常。该攻击可通过远程发起，且该漏洞的利用方式已经公开，可被实际利用。项目方早已通过问题报告获知此问题，但截至目前尚未作出回应。

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-90813

Vulnerability Information
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Vulnerability Title
cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand validate before canonicalize
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in cosmicstack-labs mercury-agent up to 1.1.13. Affected is the function checkShellCommand of the file src/capabilities/permissions.ts of the component Shell Command Execution. The manipulation results in incorrect behavior order: validate before canonicalize. The attack may be launched remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的行为次序：规范化之前验证
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cosmicstack-labs mercury-agent 1.1.0 cpe:2.3:a:cosmicstack-labs:mercury-agent:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90813

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III. Intelligence Information for CVE-2026-90813

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Proof of Concept for CVE-2026-90813 (1)

Other References for CVE-2026-90813 (1)

Same Patch Batch · cosmicstack-labs · 2026-09-14 · 5 CVEs total

CVE-2026-90810 6.3 MEDIUM cosmicstack-labs mercury-agent Shell Command Permission Check permissions.ts PermissionMan
CVE-2026-90814 6.3 MEDIUM cosmicstack-labs mercury-agent GitHub API github.ts githubRequest server-side request forg
CVE-2026-90812 4.3 MEDIUM cosmicstack-labs mercury-agent Shell Command Permission permissions.ts checkShellCommand p
CVE-2026-90811 3.3 LOW cosmicstack-labs mercury-agent Shell Permission Manifest permissions.ts PermissionManager.

IV. Related Vulnerabilities

Same product: mercury-agent
Same vendor: cosmicstack-labs
Same weakness: CWE-180

V. Comments for CVE-2026-90813

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