CVE-2023-2142

Published: Nov 26, 2024Modified: Jun 17, 2026

6.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.7

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (1)

Products: Mozilla: Nunjucks

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mozilla Nunjucks	Before 3.2.4

Related CWEs

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (2)

https://bugzilla.mozilla.org/show_bug.cgi?id=1825980

Source: security@mozilla.org

Issue TrackingPermissions Required

https://github.com/mozilla/nunjucks/security/advisories/GHSA-x77j-w7wf-fjmw

Source: security@mozilla.org

Vendor Advisory

Timeline

No history available yet.