Vulnerability · Published Sep 14, 2026 · Assigned by VulDB
CVE-2026-90811cosmicstack-labs mercury-agent Shell Permission Manifest permissions.ts PermissionManager.checkShellCommand information disclosure
Low 3.3
In plain English
A low-severity information exposure in mercury-agent from cosmicstack-labs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Official description
A weakness has been identified in cosmicstack-labs mercury-agent up to 1.2.0. This affects the function PermissionManager.checkShellCommand of the file mercury-agent/src/capabilities/permissions.ts of the component Shell Permission Manifest. Executing a manipulation can lead to information disclosure. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| cosmicstack-labs | mercury-agent | 1.01.11.2.0 |
Weakness: CWE-200, CWE-284 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
References
- VDB-403313 | cosmicstack-labs mercury-agent Shell Permission Manifest permissions.ts PermissionManager.checkShellCommand information disclosure vdb-entry, technical-description
- VDB-403313 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-90811 | CVE Analysis and Report third-party-advisory
- Submit #922877 | cosmicstack-labs mercury-agent <= 1.2.0 Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) third-party-advisory
- https://github.com/cosmicstack-labs/mercury-agent/issues/102 exploit, issue-tracking
- https://github.com/cosmicstack-labs/mercury-agent/ product