CVE-2026-6143: Reqwest Proxy Fingerprint Loss
Constructing proxy requests by manually iterating and filtering headers inline alters header ordering and casing, invalidating the original client fingerprint and potentially triggering upstream WAF blocks. Prefer pre-processing headers into a strict ordered collection, or use low-level clients like `hyper` to preserve exact header casing and order.
Rustgreprules fetch cve-2026-6143-reqwest-proxy-fingerprint-loss --engine opengrepDescription
Constructing proxy requests by manually iterating and filtering headers inline alters header ordering and casing, invalidating the original client fingerprint and potentially triggering upstream WAF blocks. Prefer pre-processing headers into a strict ordered collection, or use low-level clients like `hyper` to preserve exact header casing and order.
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