Detections
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SCA: security update for github.com/fleetdm/fleet/v4 (GHSA-4f9r-x588-pp2h)

high Tenable Self-Hosted Container Security Plugin ID 439484

Description

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

 - Fleet is open source device management software. Prior to 4.81.0, Fleet contained an issue in the user
 invitation flow where the email address provided during invite acceptance was not validated against the
 email address associated with the invite. An attacker who obtained a valid invite token could create an
 account under an arbitrary email address while inheriting the role granted by the invite, including global
 admin. Version 4.81.0 patches the issue. (CVE-2026-34389)

Solution

Update the github.com/fleetdm/fleet/v4 library and its related packages to version 4.81.0 or later.

See Also

https://github.com/advisories/GHSA-4f9r-x588-pp2h

Plugin Details

Severity: High

ID: 439484

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 3/31/2026

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: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-34389

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

CVSS v4

Risk Factor: High

Base Score: 7.1

Threat Score: 4.9

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/30/2026

Vulnerability Publication Date: 3/27/2026

Reference Information

CVE: CVE-2026-34389

cwe: CWE-287