CVE-2024-29041

Summary

Express.js minimalist web framework for node. Versions of Express.js prior to 4.19.0 and all pre-release alpha and beta versions of 5.0 are affected by an open redirect vulnerability using malformed URLs. When a user of Express performs a redirect using a user-provided URL Express performs an encode using encodeurl on the contents before passing it to the location header. This can cause malformed URLs to be evaluated in unexpected ways by common redirect allow list implementations in Express applications, leading to an Open Redirect via bypass of a properly implemented allow list. The main method impacted is res.location() but this is also called from within res.redirect(). The vulnerability is fixed in 4.19.2 and 5.0.0-beta.3.

Affected Software

VendorProductVersion RangeStatus
expressjsexpress>=4.14.0, <4.19.0affected
expressjsexpress>=5.0.0-alpha.1, <5.0.0-beta.3affected

Weaknesses

  • CWE-601: CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
  • CWE-1286: CWE-1286: Improper Validation of Syntactic Correctness of Input

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References