CVE-2026-18998
cosmicstack-labs mercury-agent delegate_task Tool sub-agent.ts SubAgent.run improper authorization
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.
INFO
Published Date :
Aug. 6, 2026, 6:16 a.m.
Last Modified :
Aug. 6, 2026, 6:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-18998
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update mercury-agent to the latest version.
- Review agent access controls and permissions.
- Monitor for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18998.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18998 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18998
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18998 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18998 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:cosmicstack-labs:mercury-agent:*:*:*:*:*:*:*:*'], 'vendor': 'cosmicstack-labs', 'modules': ['delegate_task Tool'], 'product': 'mercury-agent', 'versions': [{'status': 'affected', 'version': '1.1.0'}, {'status': 'affected', 'version': '1.1.1'}, {'status': 'affected', 'version': '1.1.2'}, {'status': 'affected', 'version': '1.1.3'}, {'status': 'affected', 'version': '1.1.4'}, {'status': 'affected', 'version': '1.1.5'}, {'status': 'affected', 'version': '1.1.6'}, {'status': 'affected', 'version': '1.1.7'}, {'status': 'affected', 'version': '1.1.8'}, {'status': 'affected', 'version': '1.1.9'}, {'status': 'affected', 'version': '1.1.10'}, {'status': 'affected', 'version': '1.1.11'}, {'status': 'affected', 'version': '1.1.12'}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CWE CWE-285 Added CWE CWE-266 Added Reference https://github.com/cosmicstack-labs/mercury-agent/ Added Reference https://github.com/cosmicstack-labs/mercury-agent/issues/74 Added Reference https://vuldb.com/cve/CVE-2026-18998 Added Reference https://vuldb.com/submit/862628 Added Reference https://vuldb.com/submit/862629 Added Reference https://vuldb.com/vuln/386381 Added Reference https://vuldb.com/vuln/386381/cti