SCA: security update for @angular/platform-server (GHSA-f6mr-pjwc-34m4)

high Tenable Self-Hosted Container Security Plugin ID 447943

Description

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

- Angular is a development platform for building mobile and desktop web applications using
TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular Server-Side
Rendering in @angular/platform-server processes user-controlled resource or request URLs through
HttpClient after application code validates them with WHATWG URL parsing. The resolveUrl and parseUrl
utilities called String.prototype.trim(), which removed leading Unicode whitespace such as U+00A0 or
U+FEFF after the input passed a same-origin check, converting a relative path into a protocol-relative
attacker-controlled URL. In affected applications that attach sensitive server-side credentials such as
Authorization headers to approved requests, relativeUrlsTransformerInterceptorFn then dispatched the
request to the attacker-controlled origin, causing SSRF and credential disclosure. This issue is fixed in
versions 20.3.30, 21.2.22, and 22.1.4. (CVE-2026-88056)

Solution

Update the @angular/platform-server library and its related packages to version 20.3.30 or later.

See Also

https://github.com/advisories/GHSA-f6mr-pjwc-34m4

Plugin Details

Severity: High

ID: 447943

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 9/11/2026

Updated: 9/30/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7

Percentile: 98.06

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-88056

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.6

Threat Score: 7.3

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/10/2026

Vulnerability Publication Date: 9/10/2026

Reference Information

CVE: CVE-2026-88056

cwe: CWE-918