CVE-2026-86472

fast-uri is a dependency-free RFC 3986 URI parser for Node.js, used by Fastify and ajv. In versions before 2.4.7, from 3.0.0 through 3.1.7, and from 4.0.0 through 4.1.4, fast-uri folds the host to lowercase before it percent-decodes the host, so a percent-encoded uppercase octet such as %41 decod...

Hackney has SSRF allowlist bypass in hackney_url:normalize/2 via percent-encoded host

Summary hackneyurl:normalize/2 URL-decodes the host component of a parsed URL, but the caller's SSRF allowlist runs before normalization using OTP's uristring:parse/1 and inet:parseaddress/1, neither of which decodes percent-escapes in hostnames. A URL like http://%31%32%37%2E%30%2E%30%2E%31/...

GHSA-PJ7V-XFVX-WMJQ Hackney has SSRF allowlist bypass in hackney_url:normalize/2 via percent-encoded host

Summary hackneyurl:normalize/2 URL-decodes the host component of a parsed URL, but the caller's SSRF allowlist runs before normalization using OTP's uristring:parse/1 and inet:parseaddress/1, neither of which decodes percent-escapes in hostnames. A URL like http://%31%32%37%2E%30%2E%30%2E%31/...

CVE-2026-47076 SSRF allowlist bypass via percent-encoded host in hackney

Interpretation Conflict vulnerability in benoitc hackney allows Server Side Request Forgery. hackneyurl:normalize/2 URL-decodes the host component after the URL has been parsed into a hackneyurl record. OTP's uristring:parse/1 and inet:parseaddress/1 do not decode percent-escapes in the host, so ...

CVE-2026-47076 SSRF allowlist bypass via percent-encoded host in hackney

Interpretation Conflict vulnerability in benoitc hackney allows Server Side Request Forgery. hackneyurl:normalize/2 URL-decodes the host component after the URL has been parsed into a hackneyurl record. OTP's uristring:parse/1 and inet:parseaddress/1 do not decode percent-escapes in the host, so ...

CVE-2026-47076

CVE-2026-47076 affects the hackney HTTP client (from 0.13.0 up to, but not including, 4.0.1). The issue1 arises because hackney_url:normalize/2 decodes the host after parsing, while OTP’s uri_string:parse/1 and inet:parse_address/1 do not decode percent-escapes, allowing a crafted URL such as htt...

EEF-CVE-2026-47076 SSRF allowlist bypass via percent-encoded host in hackney

Summary Interpretation Conflict vulnerability in benoitc hackney allows Server Side Request Forgery. hackney\url:normalize/2 URL-decodes the host component after the URL has been parsed into a hackney\url record. OTP's uri\string:parse/1 and inet:parse\address/1 do not decode percent-escapes in t...

CVE-2026-47076 SSRF allowlist bypass via percent-encoded host in hackney

Interpretation Conflict vulnerability in benoitc hackney allows Server Side Request Forgery. hackneyurl:normalize/2 URL-decodes the host component after the URL has been parsed into a hackneyurl record. OTP's uristring:parse/1 and inet:parseaddress/1 do not decode percent-escapes in the host, so ...