---
cve: "CVE-2026-90813"
severity: "MEDIUM"
cvss: 5.3
epss: "0.3%"
vendor: "cosmicstack-labs"
kev: false
exploited: false
published: "2026-09-14 19:15:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T12:57:10+02:00"
---

# CVE-2026-90813

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://vuldb.com/vuln/403315>
- <https://vuldb.com/vuln/403315/cti>
- <https://vuldb.com/cve/CVE-2026-90813>
- <https://vuldb.com/submit/922879>
- <https://github.com/cosmicstack-labs/mercury-agent/issues/95>
- <https://github.com/cosmicstack-labs/mercury-agent/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-90813) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_