Re: [SECURITY ADVISORY] wcurl path traversal with percent-encoded slashes

Paul Gilmartin via curl-users <[email protected]> Tue, 4 Nov 2025 14:54:25 -0700
Newsgroups gmane.comp.web.curl.general
Message-ID <[email protected]>
On 11/4/25 01:42, Daniel Stenberg via curl-users wrote:
>     ...
> VULNERABILITY
> -------------
> 
> 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.
>     ...
Is there a similar threat if a maliciously crafted
site returns in a reply header a filename containing
a path level separator:
     '/' for  UNIX
     '\' for Windows
     ':' for Mac Classic
     etc.

-- 
gil

-- 
Unsubscribe: https://lists.haxx.se/mailman/listinfo/curl-users
Etiquette:   https://curl.se/mail/etiquette.html