CVE-2023-2142

Name: CVE-2023-2142
Creator: NVD / NIST
Published: 2024-11-26T12:15:18.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2023-2142 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.36%

27.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mozilla	Nunjucks	< 3.2.4

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1825980Issue Tracking, Permissions Required
https://github.com/mozilla/nunjucks/security/advisories/GHSA-x77j-w7wf-fjmwVendor Advisory

Timeline

Published: Nov 26, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-2142?

How severe is CVE-2023-2142?

CVE-2023-2142 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2142?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2142?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST