# CVE-2026-7017: perl: HTTP::Tiny versions before 0.095 for Perl forward credential headers to cross-origin redirect targets

CVE-2026-7017 is fixed in 8 products on 1 platform, first by DEBIAN-CVE-2026-7017, released July 11, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-7017
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0035
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 7, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libhttp-tiny-perl Debian 13.5 (trixie) | 0.090-1+deb13u1 | [DEBIAN-CVE-2026-7017](https://patchblox.com/security/data/fix/linux/debian-cve-2026-7017.md) | Jul 11, 2026 |
| Linux | libhttp-tiny-perl Debian 14 | 0.096-1 | [DEBIAN-CVE-2026-7017](https://patchblox.com/security/data/fix/linux/debian-cve-2026-7017.md) | Jul 11, 2026 |
| Linux | libperl5.38t64 Ubuntu 24.04.5 LTS (noble) | 5.38.2-3.2ubuntu0.4 | [libperl5.38t64 5.38.2-3.2ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libperl5.38t64-5.38.2-3.2ubuntu0.4.md) | Jul 13, 2026 |
| Linux | perl Debian 12.15 (bookworm) | 5.36.0-7+deb12u4 | [DEBIAN-CVE-2026-7017](https://patchblox.com/security/data/fix/linux/debian-cve-2026-7017.md) | Jul 11, 2026 |
| Linux | perl Debian 13.5 (trixie) | 5.40.1-6+deb13u1 | [DEBIAN-CVE-2026-7017](https://patchblox.com/security/data/fix/linux/debian-cve-2026-7017.md) | Jul 11, 2026 |
| Linux | perl Debian 14 | 5.42.3-1 | [DEBIAN-CVE-2026-7017](https://patchblox.com/security/data/fix/linux/debian-cve-2026-7017.md) | Jul 11, 2026 |
| Linux | perl Ubuntu 24.04.5 LTS (noble) | 5.38.2-3.2ubuntu0.4 | [perl 5.38.2-3.2ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-perl-5.38.2-3.2ubuntu0.4.md) | Jul 13, 2026 |
| Linux | perl-HTTP-Tiny amzn 2023 | 0.092-2.amzn2023.0.3 | [ALAS2023-2026-3194](https://patchblox.com/security/data/fix/linux/alas2023-2026-3194.md) | Nov 7, 2026 |
| Linux | perl-HTTP-Tiny opensuse-leap 16.0 | 0.096-bp160.1.1 | [OPENSUSE-SU-2026:21529-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21529-1.md) | Aug 4, 2026 |
| Linux | perl-HTTP-Tiny-tests amzn 2023 | 0.092-2.amzn2023.0.3 | [ALAS2023-2026-3194](https://patchblox.com/security/data/fix/linux/alas2023-2026-3194.md) | Nov 7, 2026 |
| Linux | perl-base Ubuntu 24.04.5 LTS (noble) | 5.38.2-3.2ubuntu0.4 | [perl-base 5.38.2-3.2ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-perl-base-5.38.2-3.2ubuntu0.4.md) | Jul 13, 2026 |
| Linux | perl-debug Ubuntu 24.04.5 LTS (noble) | 5.38.2-3.2ubuntu0.4 | [perl-debug 5.38.2-3.2ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-perl-debug-5.38.2-3.2ubuntu0.4.md) | Jul 13, 2026 |
| Linux | perl-modules-5.38 Ubuntu 24.04.5 LTS (noble) | 5.38.2-3.2ubuntu0.4 | [perl-modules-5.38 5.38.2-3.2ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-perl-modules-5.38-5.38.2-3.2ubuntu0.4.md) | Jul 13, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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