PatchTheCVEexpress xss sanitizer vulnerabilities and fixes
Recent CVEs affecting express xss sanitizer, with upgrade or downgrade steps. 1 tracked.
Also searched as: expressxsssanitizer.
express xss sanitizer has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-03-27. Highest priority: CVE-2026-33979 (score 47/100).
- CVE-2026-33979 HIGH 8.2 UPGRADE Express XSS Sanitizer is Express 4.x and 5.x middleware which sanitizes user input data (in req.body, req.quer
FAQ
How do I fix express xss sanitizer vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is express xss sanitizer being exploited right now?
None of the tracked express xss sanitizer CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which express xss sanitizer CVE should I patch first?
CVE-2026-33979 currently ranks highest (47/100): Express XSS Sanitizer is Express 4.x and 5.x middleware which sanitizes user input data (in req.body, req.quer.