Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
OALDERS LWP::UserAgent
Default version status: unaffected
0 to < 6.83affected
References
- https://github.com/libwww-perl/libwww-perl/commit/9c4aeb6f2dd32f2b7eaf2d7827cade31ea6cb2c6.patch ↗
- https://metacpan.org/release/OALDERS/libwww-perl-6.83/changes ↗
- https://github.com/libwww-perl/libwww-perl/pull/512 ↗
- https://github.com/libwww-perl/libwww-perl/pull/284 ↗
- http://www.openwall.com/lists/oss-security/2026/05/12/7 ↗