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CVE-2026-91766

Cross-origin credential leak in HTTP stream wrapper redirects PUBLISHED

Description (CNA)

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 ).

Affected (CNA)

Vendor / productVersions
PHP Group / PHPaffected 8.2.* before 8.2.34; affected 8.3.* before 8.3.35; affected 8.4.* before 8.4.26; affected 8.5.* before 8.5.11

CWE

CWE-200, CWE-522

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.