GO-2026-5149 Traefik: Pre-authentication decision bypass due to forwarded alias spoofing in github.com/traefik/traefik

Traefik: Pre-authentication decision bypass due to forwarded alias spoofing in github.com/traefik/traefik...

GO-2026-5163 Traefik's ForwardAuth trustForwardHeader=false allows spoofed X-Forwarded-Prefix to bypass authentication in github.com/traefik/traefik

Traefik's ForwardAuth trustForwardHeader=false allows spoofed X-Forwarded-Prefix to bypass authentication in github.com/traefik/traefik...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity via the realIP function. An attacker can gain unauthorized access to restricted resources, evade rate limiting, or manipulate security logs by supplying a crafted X-Forwarded-For header...

GHSA-3FXJ-6JH8-HVHX chi Has an IP Spoofing Vulnerability in `middleware.RealIP`

Summary The RealIP middleware in go-chi/chi is vulnerable to IP spoofing because it blindly trusts the first leftmost element of the X-Forwarded-For HTTP header. This allows a remote attacker to bypass IP-based access control lists ACLs and rate-limiting mechanisms by providing a spoofed IP addre...

chi Has an IP Spoofing Vulnerability in `middleware.RealIP`

Summary The RealIP middleware in go-chi/chi is vulnerable to IP spoofing because it blindly trusts the first leftmost element of the X-Forwarded-For HTTP header. This allows a remote attacker to bypass IP-based access control lists ACLs and rate-limiting mechanisms by providing a spoofed IP addre...

Use of Less Trusted Source

Overview Affected versions of this package are vulnerable to Use of Less Trusted Source via the realIP function. An attacker can bypass IP-based access controls, rate limiting, and audit logging by sending crafted headers such as X-Forwarded-For, X-Real-IP, or True-Client-IP without validation...

Use of Less Trusted Source

Overview Affected versions of this package are vulnerable to Use of Less Trusted Source via the realIP function. An attacker can bypass IP-based access controls, rate limiting, and audit logging by sending crafted headers such as X-Forwarded-For, X-Real-IP, or True-Client-IP without validation...

chi's RealIP Middleware allows IP spoofing via unvalidated X-Forwarded-For header

Summary realip middleware in go-chi/chi trusts headers like x-forwarded-for without checking them, so attackers can fake their ip and bypass rate limits or access controls Details the vuln is in middleware/realip.go , the realIP function pulls IPs straight from client headers and replaces...

GHSA-RJR7-JGGH-PGCP chi's RealIP Middleware allows IP spoofing via unvalidated X-Forwarded-For header

Summary realip middleware in go-chi/chi trusts headers like x-forwarded-for without checking them, so attackers can fake their ip and bypass rate limits or access controls Details the vuln is in middleware/realip.go , the realIP function pulls IPs straight from client headers and replaces...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the RealIP process. An attacker can cause misidentification of the request source IP by manipulating the X-Forwarded-For header, potentially bypassing access controls or falsifying request logs. Remediation...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the RealIP process. An attacker can cause misidentification of the request source IP by manipulating the X-Forwarded-For header, potentially bypassing access controls or falsifying request logs. Remediation...

chi Middleware Vulnerable to Potential IP Spoofing via `X-Forwarded-For` Header in `Request.RemoteAddr` Resolution

Summary The vulnerability allows the Request.RemoteAddr to be spoofed when determining the request source IP via the X-Forwarded-For header. This could result in misidentification of the request source and potentially compromise access control and logging integrity. Details Currently, the RealIP...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the RealIP process. An attacker can cause misidentification of the request source IP by manipulating the X-Forwarded-For header, potentially bypassing access controls or falsifying request logs. Remediation...

GHSA-9G5Q-2W5X-HMXF chi Middleware Vulnerable to Potential IP Spoofing via `X-Forwarded-For` Header in `Request.RemoteAddr` Resolution

Summary The vulnerability allows the Request.RemoteAddr to be spoofed when determining the request source IP via the X-Forwarded-For header. This could result in misidentification of the request source and potentially compromise access control and logging integrity. Details Currently, the RealIP...

PT-2026-71987

Name of the Vulnerable Software and Affected Versions go-chi/chi versions 0.9.0 through 5.2.9 Description The RealIP middleware resolves the request source IP Request.RemoteAddr by using the first IP address found in the X-Forwarded-For header without validating trusted proxies. This allows a...

PT-2026-55842

Summary The vulnerability allows the Request.RemoteAddr to be spoofed when determining the request source IP via the X-Forwarded-For header. This could result in misidentification of the request source and potentially compromise access control and logging integrity. Details Currently, the RealIP...

PT-2026-55841

Summary The RealIP middleware in go-chi/chi is vulnerable to IP spoofing because it blindly trusts the first leftmost element of the X-Forwarded-For HTTP header. This allows a remote attacker to bypass IP-based access control lists ACLs and rate-limiting mechanisms by providing a spoofed IP addre...

PT-2026-71985

Name of the Vulnerable Software and Affected Versions go-chi chi versions 5.2.1 through 5.2.9 Description The RealIP middleware blindly trusts the first leftmost value of the X-Forwarded-For HTTP header. This allows a remote attacker to supply a spoofed IP address in the X-Forwarded-For header to...

BIT-NIFI-2026-54665 Apache NiFi: Missing Validation for Proxy Host Headers

Apache NiFi 0.0.1 through 2.9.0 support building qualified URLs from one of several HTTP request headers that provide an alternative to the standard Host header without validating the values provided. Apache NiFi 1.6.0 introduced a configurable application property to restrict values provided in...

CVE-2026-55655

A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack ca...