Detections
Analytics
SCA: security update for undici (GHSA-w293-vg96-wgc3)
critical Tenable Cloud Security Plugin ID 448487
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- undici's BalancedPool constructor passes its entire options object through an internal deep-clone that
serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued
TLS option, such as a caller-supplied checkServerIdentity callback or a custom connector inside the
connect option, is silently discarded before it reaches the TLS layer. As a result a peer whose
certificate the application's custom checkServerIdentity was written to reject, but which still passes
Node's default hostname and chain checks, is accepted when reached through BalancedPool. The Client, Pool,
and Agent dispatchers are not affected because they extract the connect and tls options before cloning.
This affects undici versions from 7.24.1 up to 7.29.1 and from 8.0.0 up to 8.10.2, and only when the
application supplies a function-valued connect or tls option to BalancedPool. Users should upgrade to
undici 7.29.1 or 8.10.2. (CVE-2026-84961)
Solution
Update the undici library and its related packages to version 7.29.1 or later.See Also
Plugin Details
Severity: Critical
ID: 448487
Version: Revision 1.1
Type: Local
Family: SCA Checks
Published: 9/29/2026
Updated: 9/29/2026
Risk Information
VPR
Risk Factor: Medium
Score: 4.3
Percentile: 53.48
Vendor
Vendor Severity: High
CVSS v2
Risk Factor: High
Base Score: 9.4
Temporal Score: 7
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N
CVSS Score Source: CVE-2026-84961
CVSS v3
Risk Factor: Critical
Base Score: 9.1
Temporal Score: 7.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 9/29/2026
Vulnerability Publication Date: 9/4/2026
Reference Information
CVE: CVE-2026-84961
cwe: CWE-295