CVE-2026-8368

LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects. On a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes. A redirect to an attacker controlled host therefore discloses the caller's credentials to that host.

The libwww-perl collection is a set of Perl modules which provides a simple and consistent application programming interface (API) to the World-Wide Web. The main focus of the library is to provide classes and functions that allow you to write WWW clients. The library also contain modules that are of more general use and even classes that help you implement simple HTTP servers.

Security Fix(es):

LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects.

On a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes.

A redirect to an attacker controlled host therefore discloses the caller's credentials to that host.(CVE-2026-8368)

LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects. On a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes. A redirect to an attacker controlled host therefore discloses the caller's credentials to that host.

LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects.

On a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes.

A redirect to an attacker controlled host therefore discloses the caller's credentials to that host.

LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects

These are all security issues fixed in the perl-libwww-perl-6.830.0-1.1 package on the GA media of openSUSE Tumbleweed.

This update for perl-libwww-perl fixes the following issue

• CVE-2026-8368: authorization and proxy-authorization headers are leaked on cross-origin redirects (bsc#1265156).

This update for perl-libwww-perl fixes the following issue

• CVE-2026-8368: authorization and proxy-authorization headers are leaked on cross-origin redirects (bsc#1265156).

This update for perl-libwww-perl fixes the following issue

• CVE-2026-8368: LWP: UserAgent: Authorization and Proxy-Authorization headers are leaked on cross-origin redirects (bsc#1265156).

This update for perl-libwww-perl fixes the following issue

• CVE-2026-8368: LWP: UserAgent: Authorization and Proxy-Authorization headers are leaked on cross-origin redirects (bsc#1265156).

It was discovered that libwww-perl incorrectly handled redirects. A remote attacker could possibly use this issue to obtain sensitive information by causing Authorization headers to be sent to a different host.