Echo: undici: security update to 6.27.0

high Tenable Self-Hosted Container Security Plugin ID 463803

Description

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

- Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a
message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream
many small or empty continuation frames that each pass per-frame and cumulative-size validation,
collectively 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(...))
or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised
WebSocket endpoint. All releases starting at undici 6.17.0 are affected. Patches: Upgrade to undici >=
6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds: No workaround is available. The fix must be applied through
an upgrade. (CVE-2026-12151)

Solution

Update the undici library and its related packages to version 6.27.0 or later.

Plugin Details

Severity: High

ID: 463803

Version: Revision 1.1

Type: Local

Family: Echo Local Security Checks

Published: 10/2/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

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-2026-12151

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-2026-12151

IAVB: 2026-B-0170-S

Detections

Analytics