Low severity · published Sep 14, 2026
CVE-2026-90811
cosmicstack-labs mercury-agent Shell Permission Manifest permissions.ts PermissionManager.checkShellCommand information disclosure
3.3
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% 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-2026-90811
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90811
github.com
https://github.com/cosmicstack-labs/mercury-agent/
github.com
https://github.com/cosmicstack-labs/mercury-agent/issues/102
vuldb.com
https://vuldb.com/cve/CVE-2026-90811
vuldb.com
https://vuldb.com/submit/922877
vuldb.com
https://vuldb.com/vuln/403313
vuldb.com
https://vuldb.com/vuln/403313/cti
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