CVE-2026-92395 @fastify/proxy-addr vulnerable to IP spoofing via IPv4-mapped IPv6 trust subnet

@fastify/proxy-addr is a Fastify plugin that determines a request's client address behind trusted reverse proxies, and it backs Fastify request.ip and request.ips. In versions 3.0.0 through 5.1.0, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as...

CVE-2026-92395

@fastify/proxy-addr is a Fastify plugin that determines a request's client address behind trusted reverse proxies, and it backs Fastify request.ip and request.ips. In versions 3.0.0 through 5.1.0, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as...

@anchan828/nest-redis-session-fastify (>=0.0.69, <=0.0.86), @bechara/nestjs-core (>=2.7.0, <=3.1.4) +58 more potentially affected by CVE-2026-92395 via @fastify/proxy-addr (3.0.0)

@fastify/proxy-addr NPM version 3.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on @fastify/proxy-addr and may be impacted: - @anchan828/nest-redis-session-fastify =0.0.69, =2.7.0, =0.23.0, =0.37.0-dev.2883368c84, =0.23.0, =0.34.0-dev.154,...

CVE-2026-92395 @fastify/proxy-addr vulnerable to IP spoofing via IPv4-mapped IPv6 trust subnet

@fastify/proxy-addr is a Fastify plugin that determines a request's client address behind trusted reverse proxies, and it backs Fastify request.ip and request.ips. In versions 3.0.0 through 5.1.0, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as...

EUVD-2026-80806

@fastify/proxy-addr is a Fastify plugin that determines a request's client address behind trusted reverse proxies, and it backs Fastify request.ip and request.ips. In versions 3.0.0 through 5.1.0, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as...

CVE-2026-92395

@fastify/proxy-addr (a Fastify plugin for determining client IP behind reverse proxies) is vulnerable to IP spoofing in versions 3.0.0 through 5.1.0. The root cause: an IPv4-mapped IPv6 trust subnet with an IPv4-sized prefix (e.g., ::ffff:10.0.0.0/8 instead of /104) is accepted silently but effec...

CVE-2026-92395: Authentication Bypass by Spoofing

@fastify/proxy-addr is a Fastify plugin that determines a request's client address behind trusted reverse proxies, and it backs Fastify request.ip and request.ips. In versions 3.0.0 through 5.1.0, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as...

PT-2026-93809

Name of the Vulnerable Software and Affected Versions @fastify/proxy-addr versions 3.0.0 through 5.1.0 Description This plugin, used to determine a request's client address behind trusted reverse proxies, incorrectly handles trust subnets written in IPv4-mapped IPv6 notation when an IPv4-sized...

SUSE CVE-2026-90711

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

DEBIAN-CVE-2026-90711

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

CVE-2026-90711

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

AZL-101775 CVE-2026-90711 affecting package python-tensorboard 2.16.2-6

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

UBUNTU-CVE-2026-90711

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

CVE-2026-90711

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

@42mo/42mo-web-styles (>=0.0.16, <=0.0.30), @aconex/styleguide (>=2.0.1, <=2.2.0) +1691 more potentially affected by CVE-2026-90711 via proxy-addr (>=1.1.2, <=2.0.7)

proxy-addr NPM version =1.1.2, =0.0.16, =2.0.1, =1.1.0, =0.3.1, =6.1.3, =1.0.0, =1.0.0, =0.0.0, =0.7.15, =0.17.5, =0.17.6-rc.1 and more Source cves: CVE-2026-90711 Source advisory: SNYK:JS-PROXYADDR-19812342...

User Impersonation

Overview Affected versions of this package are vulnerable to User Impersonation in its subnet matching logic, where an IPv4-mapped IPv6 trust entry with a short prefix such as ::ffff:10.0.0.0/8 compiles with all-zero leading bits and matches every address rather than the intended block. An attack...

User Impersonation

Overview Affected versions of this package are vulnerable to User Impersonation in its subnet matching logic, where an IPv4-mapped IPv6 trust entry with a short prefix such as ::ffff:10.0.0.0/8 compiles with all-zero leading bits and matches every address rather than the intended block. An attack...

CVE-2026-90711 proxy-addr vulnerable to IP spoofing via IPv4-mapped IPv6 trust subnet

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

CVE-2026-90711 proxy-addr vulnerable to IP spoofing via IPv4-mapped IPv6 trust subnet

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...

CVE-2026-90711

proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as ::ffff:10.0.0.0/8 instead of t...