How many CVEs have patched Close?

2 published CVEs changed Close in fleetdm/fleet, in 2 distinct patches totalling 47 changed lines, between 2021 and 2026.

What is the latest CVE that changed Close?

CVE-2026-23518 (Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment), published 2026-01-21, changed lines 391 to 518 of pkg/mdm/mdmtest/windows.go.

How does Close compare to the rest of fleetdm/fleet?

fleetdm/fleet has 14 CVEs with a located fix in total; 2 of them changed Close.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

RadicalNotion.AI

Security data

Weaknesses (CWE)The MITRE CWE weakness catalog
Attack Patterns (CAPEC)MITRE CAPEC attack patterns
CNAsNumbering authorities and report cards
VendorsVulnerabilities by vendor
Patched FunctionsWhere CVE fixes land in code

Tools

CVSS CalculatorScore CVSS 4.0, 3.1, 3.0 & 2.0
Badge BuilderEmbeddable SVG badges for READMEs

Resources

LearnSecurity guides
Data SourcesCVE data sources

About Blog Pricing Demo

Home
Patched Functions
Fleetdm
Fleet
Close

RadicalNotion.AI

We do not sell or share your personal information.

Security Data

CWE Directory
CAPEC Directory
CNA Directory
CNA Leaderboard
CNA Report Cards
Vendor Directory
Patched Functions
Data Sources

Calculators

CVSS Calculator
CVSS 4.0
CVSS 3.1
CVSS 3.0
CVSS 2.0
Badge Builder

Platform

My Vulnerabilities
Insights
Notifications
Pricing

Learn

Guides
What is a CVE?
What is CVSS?
The CISA KEV catalog
What is EPSS?

Company

About
Blog
Careers
Contact
Demo

Account

Legal

Security
Privacy
Terms

RadicalNotion.AI

Security data

Weaknesses (CWE)The MITRE CWE weakness catalog
Attack Patterns (CAPEC)MITRE CAPEC attack patterns
CNAsNumbering authorities and report cards
VendorsVulnerabilities by vendor
Patched FunctionsWhere CVE fixes land in code

Tools

CVSS CalculatorScore CVSS 4.0, 3.1, 3.0 & 2.0
Badge BuilderEmbeddable SVG badges for READMEs

Resources

LearnSecurity guides
Data SourcesCVE data sources

About Blog Pricing Demo

Home
Patched Functions
Fleetdm
Fleet
Close

Close in fleetdm/fleet: Patched by 2 CVEs

fleetdm/fleet

Function

2 files

Close

Name: Close in fleetdm/fleet: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

Defined in 2 files

Last patched January 21, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2021–2026

Years

By CVE publication date

Overview

Close in fleetdm/fleet was changed by 2 published CVE fixes between 2021 and 2026, in 2 distinct patches that added or removed 47 lines in total.

The name occurs in 2 files: pkg/mdm/mdmtest/windows.go, server/service/endpoint_campaigns.go.

fleetdm/fleet has 14 CVEs with a located fix in total, so 14% of them touched this function.

On this page

Overview
CVEs that patched it
Other functions in these files
Other hotspots in the repository
FAQ
References

CVEs that patched it

Every published CVE whose fix changed Close, newest first, with the lines each fix touched.

Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment
CVE-2026-23518 · pkg/mdm/mdmtest/windows.go · lines 391–518 · +35 −3 in 3 hunks
Critical · CVSS 9.3
EPSS 0.3%2026-01-21
CVE-2021-21296
CVE-2021-21296 · server/service/endpoint_campaigns.go · lines 82–89 · +7 −2
Low · CVSS 2.7
EPSS 1.9%2021-02-10

Get an alert when the next CVE fix lands in fleetdm/fleet, with the patched functions.

Monitor fleet CVEs

Other functions in these files

Functions in the same files that CVE fixes also changed.

1doManagementReqpkg/mdm/mdmtest/windows.go1 CVEs · 1 patches2026
2getCredHDRpkg/mdm/mdmtest/windows.go1 CVEs · 1 patches2026
3getTokenpkg/mdm/mdmtest/windows.go1 CVEs · 1 patches2026
4isRekeyRequestpkg/mdm/mdmtest/windows.go1 CVEs · 1 patches2026
5SendResponsepkg/mdm/mdmtest/windows.go1 CVEs · 1 patches2026
6TestWindowsMDMClientWithSigningKeypkg/mdm/mdmtest/windows.go1 CVEs · 1 patches2026
7Unenrollpkg/mdm/mdmtest/windows.go1 CVEs · 1 patches2026

Other hotspots in the repository

Functions in fleetdm/fleet changed by the most CVE fixes.

SearchTargets1 CVEs · server/service/targets.go MDMWindowsGetEnrolledDeviceWithDeviceID1 CVEs · server/datastore/mysql/microsoft_mdm.go isRekeyRequest1 CVEs · pkg/mdm/mdmtest/windows.go SendResponse1 CVEs · pkg/mdm/mdmtest/windows.go doManagementReq1 CVEs · pkg/mdm/mdmtest/windows.go getCredHDR1 CVEs · pkg/mdm/mdmtest/windows.go

All patched functions in fleetdm/fleet

Frequently asked questions

Common questions about CVE fixes to Close.

How many CVEs have patched Close?: 2 published CVEs changed Close in fleetdm/fleet, in 2 distinct patches totalling 47 changed lines, between 2021 and 2026.
What is the latest CVE that changed Close?: CVE-2026-23518 (Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment), published 2026-01-21, changed lines 391 to 518 of pkg/mdm/mdmtest/windows.go.
How does Close compare to the rest of fleetdm/fleet?: fleetdm/fleet has 14 CVEs with a located fix in total; 2 of them changed Close.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

pkg/mdm/mdmtest/windows.go on GitHub (opens in a new tab)
server/service/endpoint_campaigns.go on GitHub (opens in a new tab)
All patched functions in fleetdm/fleet
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

Track fleetdm/fleet CVEs

Get an alert when a new CVE lands in this repository, with the patched functions and AI-written remediation guidance.

Create an account See pricing