CVE-2026-90813CWE-179CWE-180

CVE-2026-90813

Medium · published September 15, 2026

CVSS v3.1
4.3
EPSS
1%
Percentile
45.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
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
EPSS
0.00554 · 45.5th percentile
Weaknesses
CWE-179 · Incorrect Behavior Order: Early Validation; CWE-180 · Incorrect Behavior Order: Validate Before Canonicalize
Published
2026-09-15T00:17Z
References (6)
https://github.com/cosmicstack-labs/mercury-agent/ · [email protected]https://github.com/cosmicstack-labs/mercury-agent/issues/95 · [email protected]https://vuldb.com/cve/CVE-2026-90813 · [email protected]https://vuldb.com/submit/922879 · [email protected]https://vuldb.com/vuln/403315 · [email protected]https://vuldb.com/vuln/403315/cti · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 14 SEP 19:15Z
    cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand validate before canonicalize
    cvelistv5