CVE-2026-90810 Details
Description
A security flaw has been discovered in cosmicstack-labs mercury-agent up to 1.1.13. The impacted element is the function PermissionManager.checkShellCommand of the file mercury-agent/src/capabilities/permissions.ts of the component Shell Command Permission Check. Performing a manipulation results in improper authorization. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
A security vulnerability has been identified in Cosmicstack Labs Mercury-Agent versions through 1.1.13. The issue arises in the Shell Command Permission Check component, specifically within the PermissionManager.checkShellCommand function in permissions.ts. The vulnerability allows for improper authorization by misclassifying certain shell commands as safe, enabling remote execution without the necessary approval. This flaw has been publicly disclosed and exploited.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 14, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://vuldb.com/submit/922876 | CISA-ADP | Issue TrackingPermission Required |
| https://github.com/cosmicstack-labs/mercury-agent/ | [email protected] | ProductVendor |
| https://github.com/cosmicstack-labs/mercury-agent/issues/101 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/cve/CVE-2026-90810 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/922876 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/403312 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/403312/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-266 | Incorrect Privilege Assignment | [email protected] |
| CWE-285 | Improper Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| cosmicstack-labs mercury-agent | <= 1.1.13 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 14, 2026 | New CVE Received | [email protected] |