CVE-2026-18998

MEDIUM

cosmicstack-labs mercury-agent delegate_task Tool sub-agent.ts SubAgent.run improper authorization

Title source: cna
STIX 2.1

Description

A vulnerability was determined in cosmicstack-labs mercury-agent up to 1.1.12. Impacted is the function SubAgent.run of the file src/core/sub-agent.ts of the component delegate_task Tool. Executing a manipulation can lead to improper authorization. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

References (7)

Core 7
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-386381 | cosmicstack-labs mercury-agent delegate_task Tool sub-agent.ts SubAgent.run improper authorization
https://vuldb.com/vuln/386381
Signature, Permissions Required signature permissions-required
VDB-386381 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/386381/cti
Third Party Advisory third-party-advisory
CVE-2026-18998 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-18998
Third Party Advisory third-party-advisory
Submit #862628 | cosmicstack-labs mercury-agent 1.1.12 Improper Authorization (CWE-285)
https://vuldb.com/submit/862628
Third Party Advisory third-party-advisory
Submit #862629 | cosmicstack-labs mercury-agent 1.1.12 Improper Authorization (CWE-285) (Duplicate)
https://vuldb.com/submit/862629

Scores

CVSS v3 6.3
EPSS 0.0021
EPSS Percentile 11.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-266 CWE-285
Status published
Products (13)
cosmicstack-labs/mercury-agent 1.1.0
cosmicstack-labs/mercury-agent 1.1.1
cosmicstack-labs/mercury-agent 1.1.10
cosmicstack-labs/mercury-agent 1.1.11
cosmicstack-labs/mercury-agent 1.1.12
cosmicstack-labs/mercury-agent 1.1.2
cosmicstack-labs/mercury-agent 1.1.3
cosmicstack-labs/mercury-agent 1.1.4
cosmicstack-labs/mercury-agent 1.1.5
cosmicstack-labs/mercury-agent 1.1.6
... and 3 more
Published Aug 06, 2026
Tracked Since Aug 06, 2026