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CVE-2026-90813
cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand validate before canonicalize
Medium5.3EPSS 0.55%
- Published
- Updated
- Reserved
- Assigned by
- VulDB
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium5.3 | 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 |
| VulDBCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 3.0 | Medium4.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 2.0 | Medium4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR |
| NVDNVD · Deferred | 4.0 | Low2.1 | 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.55% · top 54% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
cosmicstack-labs · mercury-agent
- affected 1.1.0
- affected 1.1.1
- affected 1.1.2
- affected 1.1.3
- affected 1.1.4
- affected 1.1.5
- affected 1.1.6
- affected 1.1.7
- affected 1.1.8
- affected 1.1.9
- affected 1.1.10
- affected 1.1.11
- affected 1.1.12
- affected 1.1.13
References (6)
- VDB-403315 | cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand validate before canonicalize (opens in a new tab)vdb-entrytechnical-description
- VDB-403315 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- CVE-2026-90813 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #922879 | CosmicStack Labs Mercury Agent (@cosmicstack/mercury-agent) <= 1.1.13 Incorrect Behavior Order - Validate Before Canonicalize (CWE-180) / Authorization Bypass / Path Traversal (opens in a new tab)third-party-advisory
- https://github.com/cosmicstack-labs/mercury-agent/issues/95 (opens in a new tab)exploitissue-tracking
- https://github.com/cosmicstack-labs/mercury-agent/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-90813)Record last updated .