# CVE-2026-90812

## Summary

- **CVE ID:** CVE-2026-90812
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-266
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 16, 2026

## 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.

## Affected Products

- cosmicstack-labs — mercury-agent (1.0)
- cosmicstack-labs — mercury-agent (1.1)
- cosmicstack-labs — mercury-agent (1.2.0)

## References

- [CNA](https://vuldb.com/vuln/403314)
- [CNA](https://vuldb.com/vuln/403314/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-90812)
- [CNA](https://vuldb.com/submit/922878)
- [CNA](https://github.com/cosmicstack-labs/mercury-agent/issues/80)
- [CNA](https://github.com/cosmicstack-labs/mercury-agent/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 12.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._