Nunjucks autoescape bypass leads to cross site scripting

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.

Recommendation

Update the nunjucks package to the latest compatible version. Followings are version details:

• Affected version(s): < 3.2.4
• Patched version(s): 3.2.4

References

• GHSA-x77j-w7wf-fjmw
• bugzilla.mozilla.org
• CVE-2023-2142
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• fast-xml-parser has RangeError DoS Numeric Entities Bug - CVE-2026-25128
• Valid ECDSA signatures erroneously rejected in Elliptic - CVE-2024-48948
• DOMPurify vulnerable to tampering by prototype polution - CVE-2024-48910
• cors-anywhere vulnerable to server-side request forgery - CVE-2020-36851

Tags:

npm

nunjucks