Detections
Analytics

SCA: security update for undici (GHSA-2mjp-6q6p-2qxm)

critical Tenable Self-Hosted Container Security Plugin ID 438797

Description

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

 - Undici allows duplicate HTTP Content-Length headers when they are provided in an array with case-variant
 names (e.g., Content-Length and content-length). This produces malformed HTTP/1.1 requests with multiple
 conflicting Content-Length values on the wire. Who is impacted: * Applications using undici.request(),
 undici.Client, or similar low-level APIs with headers passed as flat arrays * Applications that accept
 user-controlled header names without case-normalization Potential consequences: * Denial of Service:
 Strict HTTP parsers (proxies, servers) will reject requests with duplicate Content-Length headers (400 Bad
 Request) * HTTP Request Smuggling: In deployments where an intermediary and backend interpret duplicate
 headers inconsistently (e.g., one uses the first value, the other uses the last), this can enable request
 smuggling attacks leading to ACL bypass, cache poisoning, or credential hijacking (CVE-2026-1525)

Solution

Update the undici library and its related packages to version 6.24.0 or later.

See Also

https://github.com/advisories/GHSA-2mjp-6q6p-2qxm

Plugin Details

Severity: Critical

ID: 438797

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 3/14/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.88

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-1525

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: 3/13/2026

Vulnerability Publication Date: 3/12/2026

Reference Information

CVE: CVE-2026-1525

cwe: CWE-444