Skip to main content

Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVE-2025-15282

Medium
6/10

Summary

User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.

  • LOW
  • NETWORK
  • NONE
  • LOW

CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

The software uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

References

Advisory Timeline

  • Published