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SCA: security update for github.com/fleetdm/fleet/v4 (GHSA-ppwx-5jq7-px2w)

medium Tenable Self-Hosted Container Security Plugin ID 438120

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Fleet is open source device management software. In versions prior to 4.80.1, Fleet generated device lock
 and wipe PINs using a predictable algorithm based solely on the current Unix timestamp. Because no secret
 key or additional entropy was used, the resulting PIN could potentially be derived if the approximate time
 the device was locked is known. Fleet’s device lock and wipe commands generate a 6-digit PIN that is
 displayed to administrators for unlocking a device. In affected versions, this PIN was deterministically
 derived from the current timestamp. An attacker with physical possession of a locked device and knowledge
 of the approximate time the lock command was issued could theoretically predict the correct PIN within a
 limited search window. However, successful exploitation is constrained by multiple factors: Physical
 access to the device is required, the approximate lock time must be known, the operating system enforces
 rate limiting on PIN entry attempts, attempts would need to be spread over, and device wipe operations
 would typically complete before sufficient attempts could be made. As a result, this issue does not allow
 remote exploitation, fleet-wide compromise, or bypass of Fleet authentication controls. Version 4.80.1
 contains a patch. No known workarounds are available. (CVE-2026-23999)

Solution

Update the github.com/fleetdm/fleet/v4 library and its related packages to version 4.80.1 or later.

See Also

https://github.com/advisories/GHSA-ppwx-5jq7-px2w

Plugin Details

Severity: Medium

ID: 438120

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 3/3/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N

CVSS Score Source: CVE-2026-23999

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 4.1

Threat Score: 0.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 2/26/2026

Vulnerability Publication Date: 2/26/2026

Reference Information

CVE: CVE-2026-23999

cwe: CWE-330