{"id":"CVE-2026-7017","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-7017","summary":"HTTP::Tiny versions before 0.095 for Perl forward credential headers to cross-origin redirect targets","details":"HTTP::Tiny versions before 0.095 for Perl forward credential headers to cross-origin redirect targets.\n\nWhen 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.\n\nThe 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.","published":"2026-07-07T17:41:48.989Z","modified":"2026-08-12T03:51:26.040450803Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":{"url":"https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/84984ef3930ddd4afcf5eb83b40d3cee200739c3.patch","label":"Perl-Toolchain-Gang/HTTP-Tiny@84984ef"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/07/07/13"},{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7017.json"},{"type":"ADVISORY","url":"https://metacpan.org/release/HAARG/HTTP-Tiny-0.095-TRIAL/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7017"},{"type":"REPORT","url":"https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/pull/36"},{"type":"FIX","url":"https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/84984ef3930ddd4afcf5eb83b40d3cee200739c3.patch"},{"type":"FIX","url":"https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/8f32ca89e21c3ad0422adc698fa6ad17a193f55f.patch"},{"type":"FIX","url":"https://github.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/e7a03aedf2395158f2b0d3bad2df943349227bb3.patch"},{"type":"PACKAGE","url":"https://github.com/Perl-Toolchain-Gang/HTTP-Tiny"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:26.040450803Z"}}