NPM: 9Router has a Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header

NPM: 9Router has a Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header vulnerability discovered by ? in WordPress Npm 9router versions = 0.5.4...

GHSA-32GC-64M7-HJ7V 9Router has a Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header

Summary 9router enforces a progressive login lockout 5 failed attempts → temporary 30s+ lock keyed on the client IP. The client IP used for this limiter is taken from the X-9r-Real-Ip request header, which is intended to be set only by the bundled custom-server.js layer from the unspoofable TCP...

EUVD-2026-84542

9Router is an AI router & token saver. Prior to 0.5.6, 9Router deployments that allow requests to reach Next.js without the sanitizing custom-server.js wrapper use the client-supplied X-9r-Real-Ip value as the bucket key in getClientIp, checkLock, and recordFail in src/lib/auth/loginLimiter.js fo...

CVE-2026-82530

IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address...

CVE-2026-82530

The IP2Location Country Blocker WordPress plugin, versions prior to 2.45.0 , is vulnerable to an access control bypass via a forged X-Real-IP HTTP header. Unauthenticated remote attackers can set this header to an allowlisted IP address to circumvent page-, link-, or site-wide IP-based restrictio...

CVE-2026-82530 IP2Location Country Blocker < 2.45.0 Access Control Bypass via X-Real-IP Header

IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address...

EUVD-2026-75018

IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address...

CVE-2026-82530 IP2Location Country Blocker < 2.45.0 Access Control Bypass via X-Real-IP Header

IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address...

PT-2026-89051

IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address...

CVE-2026-84476 WWBN AVideo Authentication Bypass via X-Real-IP Header

WWBN AVideo fails to validate trusted proxies before accepting X-Real-IP and X-Forwarded-For headers, allowing attackers to spoof the client address used by enforceRateLimit. Attackers can rotate the header value per request to bypass login rate limiting and perform unlimited credential guessing...

CVE-2026-84476 WWBN AVideo Authentication Bypass via X-Real-IP Header

WWBN AVideo fails to validate trusted proxies before accepting X-Real-IP and X-Forwarded-For headers, allowing attackers to spoof the client address used by enforceRateLimit. Attackers can rotate the header value per request to bypass login rate limiting and perform unlimited credential guessing...

CVE-2026-45045

A flaw was found in the GoFiber web framework's BalancerForward proxy helper. This vulnerability allows a remote attacker to spoof their IP address by manipulating the X-Real-IP header. Because the Header.Add function is used instead of Header.Set, an attacker-supplied X-Real-IP value is forwarde...

Vaultwarden unconditionally trusts the X-Real-IP header, enabling rate-limit bypass and audit IP spoofing

Vaultwarden Unconditional Trust in the X-Real-IP Request Header Leading to Rate-Limit Bypass and Audit IP Spoofing Overview Vaultwarden supports reading the client IP from a configurable HTTP request header IPHEADER, default X-Real-IP for rate limiting of login/2FA and the admin panel, as well as...

CVE-2026-64619

FileCodeBox prior to 2.4 is affected by a rate-limit bypass in the IPRateLimit component. An unauthenticated attacker can spoof X-Real-IP and X-Forwarded-For headers without verifying the trusted reverse proxy origin, sending unique IP values per request to enumerate all share codes and access ot...

PT-2026-61697

FileCodeBox before 2.4 contains a rate-limit bypass vulnerability in the IPRateLimit class that allows unauthenticated attackers to circumvent request throttling by supplying attacker-controlled X-Real-IP and X-Forwarded-For headers without verification of trusted reverse proxy origin. Attackers...

CVE-2026-54003 Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header

Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could allow remote attackers to install the...

CVE-2026-45045 Fiber: X-Real-IP Spoofing via Header.Add() in BalancerForward

Fiber is an Express inspired web framework written in Go. Prior to 3.3.0 and 2.52.14, the BalancerForward proxy helper in middleware/proxy/proxy.go uses Header.Add instead of Header.Set when injecting X-Real-IP, allowing an attacker-supplied first X-Real-IP value to be forwarded to upstream serve...

EUVD-2026-42351

Fiber is an Express inspired web framework written in Go. Prior to 3.3.0 and 2.52.14, the BalancerForward proxy helper in middleware/proxy/proxy.go uses Header.Add instead of Header.Set when injecting X-Real-IP, allowing an attacker-supplied first X-Real-IP value to be forwarded to upstream serve...

User Impersonation

Overview Affected versions of this package are vulnerable to User Impersonation via the BalancerForward process. An attacker can manipulate upstream IP-based logic, such as rate limiting, access control, and audit logging, by injecting a spoofed X-Real-IP header value in requests. Remediation...

GoFiber Vulnerable to X-Real-IP Spoofing via Header.Add() in BalancerForward

Summary The BalancerForward proxy helper in GoFiber uses Header.Add instead of Header.Set when injecting the X-Real-IP header. This appends the real client IP as a second header value rather than replacing any attacker-supplied value. Upstream servers that read the first X-Real-IP header nginx,...