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CVE-2026-7017

7.1 · HIGH

HTTP::Tiny versions before 0.095 for Perl forward credential headers to cross-origin redirect targets.

Published Jul 7, 2026CWE-522EPSS 0.25%

Overview

CVE-2026-7017 is a high-severity vulnerability. It was published on July 7, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/84984ef3930ddd4afcf5eb83b40d3cee200739c3.patchGitHubgithub.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/8f32ca89e21c3ad0422adc698fa6ad17a193f55f.patchGitHubgithub.com/Perl-Toolchain-Gang/HTTP-Tiny/commit/e7a03aedf2395158f2b0d3bad2df943349227bb3.patchGitHubgithub.com/Perl-Toolchain-Gang/HTTP-Tiny/pull/36Refmetacpan.org/release/HAARG/HTTP-Tiny-0.095-TRIAL/changesRefwww.openwall.com/lists/oss-security/2026/07/07/13

How CyberStrike helps

Frequently asked questions

What is CVE-2026-7017?

CVE-2026-7017 is a high-severity vulnerability. It was published on July 7, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-7017?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-7017?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-7017?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-7017 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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