CVE-2023-2142
Nunjucks Cross Site Scripting (XSS) Injection
Description
In Nunjucks versions prior to version 3.2.4, it was possible to bypass the restrictions which are provided by the autoescape functionality. If there are two user-controlled parameters on the same line used in the views, it was possible to inject cross site scripting payloads using the backslash \ character.
INFO
Published Date :
Nov. 26, 2024, 12:15 p.m.
Last Modified :
June 24, 2025, 4:42 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-2142.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1825980 | Issue Tracking Permissions Required |
| https://github.com/mozilla/nunjucks/security/advisories/GHSA-x77j-w7wf-fjmw | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-2142 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-2142
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-2142 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-2142 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 24, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:mozilla:nunjucks:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.4 Added Reference Type Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1825980 Types: Issue Tracking, Permissions Required Added Reference Type Mozilla Corporation: https://github.com/mozilla/nunjucks/security/advisories/GHSA-x77j-w7wf-fjmw Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 27, 2024
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N -
New CVE Received by [email protected]
Nov. 26, 2024
Action Type Old Value New Value Added Description In Nunjucks versions prior to version 3.2.4, it was possible to bypass the restrictions which are provided by the autoescape functionality. If there are two user-controlled parameters on the same line used in the views, it was possible to inject cross site scripting payloads using the backslash \ character. Added CWE CWE-79 Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1825980 Added Reference https://github.com/mozilla/nunjucks/security/advisories/GHSA-x77j-w7wf-fjmw