CVE-2025-11563 PUBLISHED

wcurl path traversal with percent-encoded slashes

Assigner: curl
Reserved: 09.10.2025 Published: 25.02.2026 Updated: 25.02.2026

URLs containing percent-encoded slashes (/ or \) can trick wcurl into saving the output file outside of the current directory without the user explicitly asking for it.

This flaw only affects the wcurl command line tool.

Product Status

Vendor curl
Product curl
Versions Default: unaffected
  • affected from 8.17.0 to 8.17.0 (incl.)
  • affected from 8.16.0 to 8.16.0 (incl.)
  • affected from 8.15.0 to 8.15.0 (incl.)
  • affected from 8.14.1 to 8.14.1 (incl.)
  • affected from 8.14.0 to 8.14.0 (incl.)

Credits

  • Stanislav Fort (Aisle Research) finder
  • Samuel Henrique remediation developer
  • Sergio Durigan Junior remediation developer
  • Xi Ruoyao remediation developer

References

Problem Types

  • CWE-35 Path Traversal