IDORSSRFAUTH BYPASSJWT FORGERYRACE CONDITIONXXEBROKEN OBJECT-LEVEL AUTHPRIVILEGE ESCALATIONMASS ASSIGNMENTGRAPHQL INTROSPECTION ABUSEIDORSSRFAUTH BYPASSJWT FORGERYRACE CONDITIONXXEBROKEN OBJECT-LEVEL AUTHPRIVILEGE ESCALATIONMASS ASSIGNMENTGRAPHQL INTROSPECTION ABUSE
Impactr Logoimpactr
FeaturesHow it worksEvidencePricingLearnCompare
  1. Home
  2. CWE
  3. CWE-384

CWE-384

Session Fixation

Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.

Official CWE-384 definition at MITRE

Impactr finds and proves weaknesses like CWE-384 in your web apps and APIs - investigating, chaining, and validating each with a reproducible exploit.

Join the waitlist
← CWE database
Impactr Logoimpactr

Built by hackers, for the code you ship. Autonomous AI penetration testing for modern web apps and APIs.

© 2026 Impactr

Product

FeaturesCoverageUse casesEvidencePricingWaitlist

Resources

VulnerabilitiesGuidesComparisonsGlossaryCWE databaseBy industryBy languageHTTP status codesSecurity headers

Company

ContactTwitterLinkedInGitHub