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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-23518

32
FAUCET Score

CVE-2026-23518 is a critical vulnerability in Fleet

Impacted Technologies

VendorProductVersion(s)CPE
< 4.53.3CPE matchmatch criteria
cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*
>= 4.75.0, < 4.75.2CPE matchmatch criteria
cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*
>= 4.76.0, < 4.76.2CPE matchmatch criteria
cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*
>= 4.78.0, < 4.78.3CPE matchmatch criteria
cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*
4.77.0CPE matchmatch criteria
cpe:2.3:a:fleetdm:fleet:4.77.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.3CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 1st percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

gopatch availablevia ghsa
Product: github.com/fleetdm/fleetFixed in: 4.78.3
gopatch availablevia ghsa
Product: github.com/fleetdm/fleetFixed in: 4.77.1
gopatch availablevia ghsa
Product: github.com/fleetdm/fleetFixed in: 4.76.2
gopatch availablevia ghsa
Product: github.com/fleetdm/fleetFixed in: 4.75.2
gopatch availablevia ghsa
Product: github.com/fleetdm/fleetFixed in: 4.43.5-0.20260112202845-e225ef57912c

Vendor Advisories (1)

goGHSA-63m5-974w-448vcritical

Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment

Jan 20, 2026

References

github.com / fleetdm/fleet/commit/e225ef57912c8f4ac8977e24b5ebe1d9fd875257
Patch
github.com / fleetdm/fleet/security/advisories/GHSA-63m5-974w-448v
Vendor Advisory