CVE-2026-76172: Unvalidated Uri Scheme Decoding

Decoding a URI scheme without validating the result against RFC 3986 scheme syntax allows malformed schemes (such as percent-encoded slashes or CRLF) to bypass hostname allowlists and SSRF protections.

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greprules fetch cve-2026-76172-unvalidated-uri-scheme-decoding --engine opengrep

Description

Decoding a URI scheme without validating the result against RFC 3986 scheme syntax allows malformed schemes (such as percent-encoded slashes or CRLF) to bypass hostname allowlists and SSRF protections.