Angular up to 19.2.20/20.3.18/21.2.8 URLs server-side request forgery

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Angular up to 19.2.20/20.3.18/21.2.8. This impacts an unknown function of the component URLs Handler. Such manipulation leads to server-side request forgery. This vulnerability is documented as CVE-2026-41423. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Angular up to 19.2.20/20.3.18/21.2.8. It has been rated as critical. Affected by this issue is an unknown function of the component URLs Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.21, 20.3.19, 21.2.9, and 22.0.0-next.8, a Server-Side Request Forgery (SSRF) vulnerability exists in @angular/platform-server due to improper handling of URLs during Server-Side Rendering (SSR). When an attacker sends a request such as GET /\evil.com/ HTTP/1.1 the server engine (Express, etc.) passes the URL string to Angular’s rendering functions. Because the URL parser normalizes the backslash to a forward slash for HTTP/HTTPS schemes, the internal state of the application is hijacked to believe the current origin is evil.com. This misinterpretation tricks the application into treating the attacker’s domain as the local origin. Consequently, any relative HttpClient requests or PlatformLocation.hostname references are redirected to the attacker controlled server, potentially exposing internal APIs or metadata services. This issue has been patched in versions 19.2.21, 20.3.19, 21.2.9, and 22.0.0-next.8.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-41423 since 04/20/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 322293 (Linux Distros Unpatched Vulnerability : CVE-2026-41423), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 19.2.21, 20.3.19, 21.2.9 or 22.0.0-next.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (322293). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 322293
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-41423

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Angular 19.2.21/20.3.19/21.2.9/22.0.0-next.8

Timelineinfo

04/20/2026 CVE reserved
05/08/2026 +18 days Advisory disclosed
05/08/2026 +0 days VulDB entry created
06/24/2026 +47 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-41423 (🔒)
GCVE (CVE): GCVE-0-2026-41423
GCVE (VulDB): GCVE-100-362096

Entryinfo

Created: 05/08/2026 16:21
Updated: 06/24/2026 15:38
Changes: 05/08/2026 16:21 (67), 06/24/2026 15:38 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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