CVE-2026-7017 Affecting perl package, versions <5.36.0-7+deb12u4


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.35% (29th percentile)

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  • Snyk IDSNYK-ECHOLATEST-PERL-17966223
  • published14 Jul 2026
  • disclosed7 Jul 2026

Introduced: 7 Jul 2026

CVE-2026-7017  (opens in a new tab)

How to fix?

Upgrade Echo:latest perl to version 5.36.0-7+deb12u4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl package and not the perl package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1