CVE-2026-81846 runZero MCP 'Findings summaries' Data Leak
An authorization bypass in the runZero Platform MCP service allows attackers to access findings summaries without proper permissions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81846?
CVE-2026-81846 is a low-severity authentication bypass vulnerability in runZero Platform, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An authorization bypass in the runZero Platform MCP service has been resolved in version 5.1.260826.0. This issue is an instance of CWE-639: Authorization Bypass Through User-Controlled Key and has an estimated CVSS score of CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N (3.5 Low).
Weakness: CWE-639
Which versions are affected by CVE-2026-81846?
How do I fix CVE-2026-81846?
No fix has been published for CVE-2026-81846 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-81846 being exploited?
There is no known exploitation of CVE-2026-81846 in the wild and no public exploit code.
Sources
Also known as GHSA-29cr-9cjx-c8cg.