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2 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.
Impact 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. Example If the user-controlled parameters were used in the views similar to the following: It is possible to inject XSS payload using the below parameters: Patches The issue was patched in version 3.2.4. References - https://bugzilla.mozilla.org/showbug.cgi?id=1825980
Recommended action: Upgrade to 3.2.4 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Affected versions of nunjucks do not properly escape specially structured user input in template vars when in auto-escape mode, resulting in a cross-site scripting vulnerability. Proof of Concept By using an array for the keys in a template var, escaping is bypassed. A full PoC is available in the references section. Recommendation Update to version 2.4.3 or later.
Recommended action: Upgrade to 2.4.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.