Vulnerability Report

CVE-2021-4231

Title: Angular Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS)

Proof Of Concept

No public PoC currently indexed for CVE-2021-4231.

CWE Category CWE-79
Published Date May 26, 2022
Modified Date Nov 20, 2025
Exploit Status Not Found
Score 3.5 CVSS v3.1
Exploit Probability (EPSS)
1.16%

Vulnerability Summary

CVE-2021-4231: A vulnerability was found in Angular up to 11.0.4/11.1.0-next.2. It has been classified as problematic. Affected is the handling of comments. The manipulation leads to cross site scripting. It is possible to launch the attack remotely but it might require an authentication first. Upgrading to version 11.0.5 and 11.1.0-next.3 is able to address this issue. The name of the patch is ba8da742e3b243e8f43d4c63aa842b44e14f2b09. It is recommended to upgrade the affected component.

Impacted Vendors

A
angularjs 1
A
angular 1

Reference Links

https://github.com/angular/angular/commit/ba8da742e3b243e8f43d4c63aa842b44e14f2b09 https://github.com/angular/angular/issues/40136 https://security.snyk.io/vuln/SNYK-JS-ANGULARCORE-1070902 https://vuldb.com/?id.181356 https://github.com/angular/angular/commit/ba8da742e3b243e8f43d4c63aa842b44e14f2b09 https://github.com/angular/angular/issues/40136 https://security.snyk.io/vuln/SNYK-JS-ANGULARCORE-1070902 https://vuldb.com/?id.181356
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.4
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v2.0
Source Entity [email protected]
Severity LOW
3.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:S/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-4231 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Affected Stack

No specific products linked.