MEDIUM 5.9 NVD

CVE-2026-91766

When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the

When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, a different port, or a downgrade from HTTPS to HTTP. A server that can steer a redirect therefore receives credentials that were only meant for the original origin. This is the same class of issue that libcurl fixed in 7.58.0 ( CVE-2018-1000007 https://github.com/advisories/GHSA-g7x2-hrfp-pv5f ).

Remediation

$ sudo apt install --only-upgrade php8.4

References

https://github.com/php/php-src/security/advisories/GHSA-fpwc-w8rq-cr92

Published: 2026-09-25 · Source: NVD · Feed updated: 2026-09-25

This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-09-25 via NVD. A remediation command is available below.

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