curl: URL API: triple-slash parses path segment as hostname

Summary libcurl's URL API misparses http:///host/path. Per RFC 3986, the authority between // and / is empty, so /host/path is the path. But parseurl in lib/urlapi.c treats the first segment as the hostname. On line 1087, the slash counter i reaches 3, which is within the valid 1-3 range, and hos...

OESA-2025-2591 firefox security update

Security Fixes: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /../ part in the path could be used to override the specified host. This could contribute to security problems in web sites. This vulnerability affects Firefox 120, Firefox ESR 115.5.0, and...

Mozilla: Incorrect parsing of relative URLs starting with "///"

The Mozilla Foundation Security Advisory describes this flaw as: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites...

Internet Explorer Vulnerability: Content-Location works with both triple and double slash

After I reported the Content-Location Vulnerability http://www.securityfocus.com/archive/1/342317, Thor Larholm explained that the html execution was not caused by the Content-Location header, but instead by the triple slash file:///. I have tested it with double slash and I even tested the tripl...