Medium severity · published Aug 6, 2026
CVE-2026-18997
cosmicstack-labs mercury-agent bg agent.ts Agent.handleBgCommand authorization
6.3
CVSS
0.4%
EPSS
No
On KEV
Description
A vulnerability was found in cosmicstack-labs mercury-agent up to 1.1.12. This issue affects the function Agent.handleBgCommand of the file src/core/agent.ts of the component bg Command Handler. Performing a manipulation results in incorrect authorization. It is possible to initiate the attack remotely. The exploit has been made public and could 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:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
mercury-agent · cosmicstack-labs
1.1.0; 1.1.1; 1.1.2; 1.1.3; 1.1.4; 1.1.5; +7 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18997
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18997
github.com
https://github.com/cosmicstack-labs/mercury-agent/
github.com
https://github.com/cosmicstack-labs/mercury-agent/issues/73
vuldb.com
https://vuldb.com/cve/CVE-2026-18997
vuldb.com
https://vuldb.com/submit/862627
vuldb.com
https://vuldb.com/vuln/386380
vuldb.com
https://vuldb.com/vuln/386380/cti
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