ALAS2027-2026-199


Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-199
Advisory Released Date: 2026-10-12
Advisory Updated Date: 2026-11-02
Severity: Medium

Issue Overview:

Package updates are available for Amazon Linux 2027 that fix the following vulnerabilities:
CVE-2026-7017:
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.


Affected Packages:

perl-HTTP-Tiny


Issue Correction:
Run dnf update perl-HTTP-Tiny --releasever 2027.0.20261012 or dnf update --advisory ALAS2027-2026-199 --releasever 2027.0.20261012 to update your system.

New Packages:
noarch:
    perl-HTTP-Tiny-0.096-528.amzn2027.0.1.noarch
    perl-HTTP-Tiny-tests-0.096-528.amzn2027.0.1.noarch

src:
    perl-HTTP-Tiny-0.096-528.amzn2027.0.1.src