What is CVE-2023-2142?

CVE-2023-2142 is a medium-severity vulnerability in Mozilla Nunjucks, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-11-26.

How severe is CVE-2023-2142?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Mozilla Nunjucks

CVE-2023-2142

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (28.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Mozilla Nunjucks — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@mozilla.org (Permissions Required, issue-tracking, Issue Tracking)
security@mozilla.org (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-2142?: CVE-2023-2142 is a medium-severity vulnerability in Mozilla Nunjucks, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-11-26.
How severe is CVE-2023-2142?: Medium severity. CVSS v3 base score is 6.1 out of 10.