Medium 6.3Published Aug 6, 2026

CVE-2026-18998cosmicstack-labs mercury-agent delegate_task Tool sub-agent.ts SubAgent.run improper authorization

Updated under an hour ago (2026-10-19 09:20 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for cosmicstack-labs mercury-agent

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Weakness (CWE): CWE-285, CWE-266
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Aug 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

cosmicstack-labs mercury-agent cosmicstack-labs:mercury-agent	1.1.0; 1.1.1; 1.1.2; 1.1.3; 1.1.4; 1.1.5; 1.1.6; 1.1.7; and 5 more ranges	CNA record

References

https://vuldb.com/vuln/386381vdb-entry, technical-description
https://vuldb.com/vuln/386381/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-18998third-party-advisory
https://vuldb.com/submit/862628third-party-advisory
https://vuldb.com/submit/862629third-party-advisory
https://github.com/cosmicstack-labs/mercury-agent/issues/74exploit, issue-tracking
https://github.com/cosmicstack-labs/mercury-agent/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.