CVE-2026-113440: Credential Exposure

Description

Insufficiently Protected Credentials vulnerability in hackney in benoitc hackney allows a redirecting server to obtain the basic_auth and cookie credentials of a request via a same-host redirect to another scheme or port. With follow_redirect enabled, hackney:follow_redirect/10 in src/hackney.erl reissues the request to the Location target after hackney:maybe_strip_auth_on_redirect/3, which compared only the hostname of the current and the redirect URL. A redirect from https to http on the same host resent the Authorization and Cookie headers in cleartext, where an on-path attacker can read them, and a redirect to another port on the same host handed them to a different service. location_trusted forwards credentials to any target by design and is unchanged. This issue affects hackney: from 2.0.0 before 4.9.0.

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Weakness Type (CWE)

CWE-522 CWE-522

References

Other References

https://cna.erlef.org/cves/CVE-2026-113440.html https://github.com/benoitc/hackney/commit/6548384b22ea196023a1963e2967d5715b6d9564 https://github.com/benoitc/hackney/commit/8f944559bdb83da60b5c06f6cf6d842591278364 https://github.com/benoitc/hackney/pull/979 https://github.com/benoitc/hackney/releases/tag/4.9.0 https://osv.dev/vulnerability/EEF-CVE-2026-113440

Frequently Asked Questions

What is CVE-2026-113440? +

Insufficiently Protected Credentials vulnerability in hackney in benoitc hackney allows a redirecting server to obtain the basic_auth and cookie credentials of a request via a same-host redirect to another scheme or port. With follow_redirect enabled, hackney:follow_redirect/10 in src/hackney.erl reissues the request to the Location target after hackney:maybe_strip_auth_on_redirect/3, which compared only the hostname of the current and the redirect URL. A redirect from https to http on the same host resent the Authorization and Cookie headers in cleartext, where an on-path attacker can read them, and a redirect to another port on the same host handed them to a different service. location_trusted forwards credentials to any target by design and is unchanged. This issue affects hackney: from 2.0.0 before 4.9.0.

How do I check if I'm vulnerable to CVE-2026-113440? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-113440