Detections
Analytics

SCA: security update for h3 (GHSA-2j6q-whv2-gh6w)

medium Tenable Self-Hosted Container Security Plugin ID 439072

Description

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

 - H3 is a minimal H(TTP) framework. In versions 2.0.0-0 through 2.0.1-rc.16, the `mount()` method in h3 uses
 a simple `startsWith()` check to determine whether incoming requests fall under a mounted sub-
 application's path prefix. Because this check does not verify a path segment boundary (i.e., that the next
 character after the base is `/` or end-of-string), middleware registered on a mount like `/admin` will
 also execute for unrelated routes such as `/admin-public`, `/administrator`, or `/adminstuff`. This allows
 an attacker to trigger context-setting middleware on paths it was never intended to cover, potentially
 polluting request context with unintended privilege flags. Version 2.0.2-rc.17 contains a patch.
 (CVE-2026-33490)

Solution

Update the h3 library and its related packages to version 2.0.1-rc.17 or later.

See Also

https://github.com/advisories/GHSA-2j6q-whv2-gh6w

Plugin Details

Severity: Medium

ID: 439072

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 3/21/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.2

Percentile: 51.15

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2026-33490

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/20/2026

Vulnerability Publication Date: 3/20/2026

Reference Information

CVE: CVE-2026-33490

cwe: CWE-706