Detections
Analytics

SCA: security update for undici (GHSA-38rv-x7px-6hhq)

high Tenable Cloud Security Plugin ID 443557

Description

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

 - Impact: The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative
 size of fragmented uncompressed messages. A malicious WebSocket server can stream many small fragments
 that each pass per-frame validation but collectively exceed the configured limit, causing unbounded memory
 growth in the client process. The result is memory exhaustion and a denial of service. Affected
 applications are those using the undici WebSocket client (new WebSocket(...)) that can be induced to
 connect to an attacker-controlled or compromised WebSocket endpoint. This is a regression specific to
 undici 8.1.0. The 6.25.0 line shipped the equivalent cumulative check from the start and is unaffected.
 The 7.x line never had the maxPayloadSize feature and is also unaffected. Patches: Upgrade to undici >=
 8.5.0. Workarounds: No workaround is available. The fix must be applied through an upgrade.
 (CVE-2026-9675)

Solution

Update the undici library and its related packages to version 8.5.0 or later.

See Also

https://github.com/advisories/GHSA-38rv-x7px-6hhq

Plugin Details

Severity: High

ID: 443557

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 6/19/2026

Updated: 6/24/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-9675

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/18/2026

Vulnerability Publication Date: 6/17/2026

Reference Information

CVE: CVE-2026-9675