CVE-2026-90813

EUVD-2026-77773

14.09.2026, 20:17

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	4.3 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Common Weakness Enumeration

CWE-179 - Incorrect Behavior Order: Early Validation
The software validates input before applying protection mechanisms that modify the input, which could allow an attacker to bypass the validation via dangerous inputs that only arise after the modification.

References

https://github.com/cosmicstack-labs/mercury-agent/

https://github.com/cosmicstack-labs/mercury-agent/issues/95

https://vuldb.com/cve/CVE-2026-90813

https://vuldb.com/submit/922879

https://vuldb.com/vuln/403315

https://vuldb.com/vuln/403315/cti