| Name | CVE-2026-7017 |
| Description | HTTP::Tiny versions before 0.095 for Perl forward credential headers to cross-origin redirect targets. When the server returns a 3xx redirect, `_maybe_redirect` follows the `Location:` header and `_prepare_headers_and_cb` re-merges the caller's `headers` argument into the new request, without checking whether the redirect target shares an origin with the original URL. Caller-supplied `Authorization`, `Cookie` and `Proxy-Authorization` headers are therefore re-sent to whatever host the redirect names, across scheme, host or port boundaries, and including `https` to `http` downgrades that expose them in plaintext on the wire. The HTTP::Tiny POD note that "Authorization headers will not be included in a redirected request" applied only to the URL-userinfo Basic-auth path, not to headers passed explicitly by the caller. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1141638, 1141639 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libhttp-tiny-perl (PTS) | bookworm | 0.082-2 | vulnerable |
| trixie | 0.090-1 | vulnerable | |
| forky, sid | 0.096-1 | fixed | |
| perl (PTS) | bullseye | 5.32.1-4+deb11u3 | vulnerable |
| bullseye (security) | 5.32.1-4+deb11u5 | vulnerable | |
| bookworm | 5.36.0-7+deb12u3 | vulnerable | |
| bookworm (security) | 5.36.0-7+deb12u2 | vulnerable | |
| trixie | 5.40.1-6 | vulnerable | |
| forky | 5.40.1-8 | vulnerable | |
| sid | 5.42.2-3 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libhttp-tiny-perl | source | (unstable) | 0.096-1 | 1141638 | ||
| perl | source | (unstable) | (unfixed) | 1141639 |
[trixie] - libhttp-tiny-perl <no-dsa> (Minor issue)
[bookworm] - libhttp-tiny-perl <postponed> (Minor issue; leak requires caller-supplied credential headers and an attacker-influenced redirect)
https://lists.security.metacpan.org/cve-announce/msg/41618211/
https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/pull/36
Fixed by: https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/84984ef3930ddd4afcf5eb83b40d3cee200739c3 (release-0.095)
Fixed by: https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/e7a03aedf2395158f2b0d3bad2df943349227bb3 (release-0.095)
Fixed by: https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/8f32ca89e21c3ad0422adc698fa6ad17a193f55f (release-0.095)