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...

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-2026-84476 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...

GHSA-GCFQ-8GQF-4876 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,...

CVE-2025-66577 cpp-httplib Untrusted HTTP Header Handling: X-Forwarded-For/X-Real-IP Trust

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can supply X-Forwarded-For or X-Real-IP headers which...

CVE-2023-51982

CrateDB 5.5.1 is contains an authentication bypass vulnerability in the Admin UI component. After configuring password authentication and Local In the case of an address, identity authentication can be bypassed by setting the X-Real IP request header to a specific value and accessing the Admin UI...

Command injection

OS command injection vulnerability in driverssynoimportuser.php in Synology Calendar before 2.3.1-0617 allows remote attackers to execute arbitrary commands via the crafted 'X-Real-IP' header...

CVE-2019-11829

OS command injection vulnerability in driverssynoimportuser.php in Synology Calendar before 2.3.1-0617 allows remote attackers to execute arbitrary commands via the crafted 'X-Real-IP' header...