Microsoft Common Data Model SDK Denial of Service Vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

• CVE-2023-36566: 3.00% estimated exploitation activity in the next 30 days; percentile 87.36 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Microsoft Common Data Model SDK Denial of Service Vulnerability

Published by the source

10 Oct 2023, 18:31 UTC

Last modified by the source

7 Jul 2026, 17:57 UTC

Source last checked

26 Oct 2026, 13:13 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-vm2m-7hpw-fpmq

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-vm2m-7hpw-fpmq

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# Patch Next advisory brief: CVE-2023-36566

Advisory: Microsoft Common Data Model SDK Denial of Service Vulnerability
IDs: CVE-2023-36566, GHSA-vm2m-7hpw-fpmq
Record: https://patchnext.com/advisories/cve-2023-36566 (revision 2, source checked 26 Oct 2026, 13:13 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: commondatamodel-objectmodel 1.7.4; microsoft.commondatamodel.objectmodel 1.7.4; com.microsoft.commondatamodel:objectmodel 1.7.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI commondatamodel-objectmodel: affected < 1.7.4; fixed in 1.7.4
- NuGet microsoft.commondatamodel.objectmodel: affected < 1.7.4; fixed in 1.7.4
- Maven com.microsoft.commondatamodel:objectmodel: affected < 1.7.4; fixed in 1.7.4

## Suggested inspection (read-only)
- `python -m pip show commondatamodel-objectmodel`: prints the installed version. Run with the environment that serves production active.
- NuGet microsoft.commondatamodel.objectmodel: check the installed version with your package manager.
- Maven com.microsoft.commondatamodel:objectmodel: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on commondatamodel-objectmodel, microsoft.commondatamodel.objectmodel, com.microsoft.commondatamodel:objectmodel.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-vm2m-7hpw-fpmq (OSV record GHSA-vm2m-7hpw-fpmq lists affected ranges: NuGet microsoft.commondatamodel.objectmodel >=0 =0 =0 <1.7.4 (fixed))
- Verified: https://github.com/advisories/GHSA-vm2m-7hpw-fpmq (GitHub-reviewed advisory GHSA-vm2m-7hpw-fpmq lists affected ranges: NuGet microsoft.commondatamodel.objectmodel >=0 =0 =0 <1.7.4)

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