CVE-2026-81846Network attack vector

Cross-organization findings disclosure via unchecked organization ID

Published Sep 1, 2026 · Updated Sep 1, 2026

Authorization bypass in runZero Platform MCP service 4.0.251031.0 through 5.1.260825.0 allows remote authenticated users to read Findings summaries. The Findings summaries tool accepts a target organization ID and returns its summary data without enforcing the caller's authorized organization scope. Exploitation requires valid service access and knowledge of another organization’s unique ID; disclosed data is limited to Findings summaries.

CVSS severity3.5
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in runZero Platform MCP service 4.0.251031.0 through 5.1.260825.0 allows remote authenticated users to read Findings summaries. The Findings summaries tool accepts a target organization ID and returns its summary data without enforcing the caller's authorized organization scope. Exploitation requires valid service access and knowledge of another organization’s unique ID; disclosed data is limited to Findings summaries.

The record

CVE
CVE-2026-81846
Published
Sep 1, 2026
Updated
Sep 1, 2026
Vendor
runZero
Product
runZero Platform
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.251031.0 <=5.1.260825.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

runZero · runZero Platformversion=4.0.251031.0 <=5.1.260825.0

Published CVSS scores

3.5runZeroCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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