Vulnerability · Published Aug 6, 2026 · Assigned by VulDB

CVE-2026-18997cosmicstack-labs mercury-agent bg agent.ts Agent.handleBgCommand authorization

Medium 6.3

In plain English

A medium-severity incorrect authorization in mercury-agent from cosmicstack-labs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.4%top 69.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
cosmicstack-labs	mercury-agent	1.1.01.1.11.1.21.1.31.1.41.1.51.1.61.1.7

Weakness: CWE-863, CWE-285 · Vector: 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

References

VDB-386380 | cosmicstack-labs mercury-agent bg agent.ts Agent.handleBgCommand authorization vdb-entry, technical-description
VDB-386380 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-18997 | CVE Analysis and Report third-party-advisory
Submit #862627 | cosmicstack-labs mercury-agent 1.1.12 Incorrect Authorization (CWE-863) third-party-advisory
https://github.com/cosmicstack-labs/mercury-agent/issues/73 exploit, issue-tracking
https://github.com/cosmicstack-labs/mercury-agent/ product