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CVE-2026-90812— cosmicstack-labs mercury-agent Shell Command Permission permissions.ts checkShellCommand privileges assignment

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 1.2.0 及之前）中检测到一项安全漏洞。该漏洞影响组件“Shell Command Permission”中 文件里的 函数。通过对此函数进行操纵，会导致权限分配错误。攻击者可远程发起攻击。该利用方式已公开披露，并可能被实际利用。项目方已通过问题报告得知该问题，但截至目前尚未作出回应。

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 3

VendorProduct Version RangeStatus
cosmicstack-labs mercury-agent 1.0 affected
1.1 affected
1.2.0 affected
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I. Basic Information for CVE-2026-90812

Vulnerability Information
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Vulnerability Title
cosmicstack-labs mercury-agent Shell Command Permission permissions.ts checkShellCommand privileges assignment
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in cosmicstack-labs mercury-agent up to 1.2.0. This impacts the function checkShellCommand of the file src/capabilities/permissions.ts of the component Shell Command Permission. The manipulation leads to incorrect privilege assignment. The attack may be initiated remotely. The exploit has been disclosed publicly 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
特权授予不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cosmicstack-labs mercury-agent 1.0 cpe:2.3:a:cosmicstack-labs:mercury-agent:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90812

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III. Intelligence Information for CVE-2026-90812

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Other References for CVE-2026-90812 (2)

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-2026-90813 4.3 MEDIUM cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand va
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-266

V. Comments for CVE-2026-90812

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