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-621

CWE-621

Variable Extraction Error

The product uses external input to determine the names of variables into which information is extracted, without verifying that the names of the specified variables are valid. This could cause the program to overwrite unintended variables.

Official CWE-621 definition at MITRE

Impactr finds and proves weaknesses like CWE-621 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