Medium severity · published Sep 14, 2026
CVE-2026-90812
cosmicstack-labs mercury-agent Shell Command Permission permissions.ts checkShellCommand privileges assignment
4.3
CVSS
0.4%
EPSS
No
On KEV
Description
A security vulnerability has been detected in cosmicstack-labs mercury-agent up to 1.2.0. This impacts the function checkShellCommand of the file src/capabilities/permissions.ts of the component Shell Command Permission. The manipulation leads to incorrect privilege assignment. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
mercury-agent · cosmicstack-labs
1.0; 1.1; 1.2.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90812
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90812
github.com
https://github.com/cosmicstack-labs/mercury-agent/
github.com
https://github.com/cosmicstack-labs/mercury-agent/issues/80
vuldb.com
https://vuldb.com/cve/CVE-2026-90812
vuldb.com
https://vuldb.com/submit/922878
vuldb.com
https://vuldb.com/vuln/403314
vuldb.com
https://vuldb.com/vuln/403314/cti
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