CVE-2026-90453

Summary

A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be redirected to an arbitrary external destination after completing an upload.

Affected Software

VendorProductVersion RangeStatus
CISAMalcolm0 < v26.06.0affected
CISAMalcolmv26.06.0unaffected

Weaknesses

  • CWE-601: CWE-601 URL redirection to untrusted site ('open redirect')

References