CVE-2026-81846
runZero MCP 'Findings summaries' Data Leak
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).
INFO
Published Date :
Sept. 1, 2026, 7:17 p.m.
Last Modified :
Sept. 1, 2026, 8:17 p.m.
Remotely Exploit :
Yes !
Source :
44488dab-36db-4358-99f9-bc116477f914
Affected Products
The following products are affected by CVE-2026-81846
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 | 44488dab-36db-4358-99f9-bc116477f914 | |||||
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | LOW | 44488dab-36db-4358-99f9-bc116477f914 |
Solution
- Update runZero Platform MCP service to version 5.1.260826.0.
- Apply the latest available patches for the service.
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-2026-81846.
| URL | Resource |
|---|---|
| https://help.runzero.com/docs/release-notes/#512608260 | |
| https://www.runzero.com/advisories/runzero-mcp-findings-summaries-data-leak-cve-2026-81846 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-81846 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-2026-81846
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-2026-81846 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-81846 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.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 01, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-81846', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-01T19:36:32.794252Z'} -
New CVE Received by 44488dab-36db-4358-99f9-bc116477f914
Sep. 01, 2026
Action Type Old Value New Value Added 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). Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N Added CWE CWE-639 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/81xxx/CVE-2026-81846.json">CVE-2026-81846</a> Added Reference https://help.runzero.com/docs/release-notes/#512608260 Added Reference https://www.runzero.com/advisories/runzero-mcp-findings-summaries-data-leak-cve-2026-81846 Added SSVC {'role': 'CNA', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3'}