PT-2026-57997

Name of the Vulnerable Software and Affected Versions Eclipse Kura versions prior to 5.6.2 Description The software trusts the client-supplied X-Forwarded-For HTTP header as the authoritative source of the client IP address in audit log entries. The org.eclipse.kura.web2 Web Console and...

CVE-2026-55501

9Router is an AI router & token saver. Prior to 0.4.80, the dashboard login rate limiter in src/lib/auth/loginLimiter.js derives the client identity from the attacker-controlled X-Forwarded-For HTTP header, and src/app/api/auth/login/route.js uses that spoofable value for checkLock and recordFail...

CVE-2026-54003

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-2026-54003 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-2026-54003

Summary of CVE-2026-54003 (Kirby CMS) : Affected Kirby installations with no configured user accounts, running behind a reverse proxy that sets Forwarded, X-Client-IP, or X-Real-IP headers could allow remote attackers to install the Panel and create the first admin user. This occurs on releases p...

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-2026-54003 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-2026-59897

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.3.3 before 4.12.27, the AWS API Gateway v1 adapter can drop a distinct repeated request header value because it de-duplicates values using a substring comparison instead of an exact match, so middleware o...

PYSEC-2026-1553 Litestar X-Forwarded-For Header Spoofing Vulnerability Enables Rate Limit Evasion

While testing Litestar's RateLimitMiddleware, I discovered that rate limits can be completely bypassed by manipulating the X-Forwarded-For header. This renders IP-based rate limiting ineffective against determined attackers. The Problem Litestar's RateLimitMiddleware uses cachekeyfromrequest to...

GHSA-7CFM-PQRJ-XGQ7 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header

Summary The 9router dashboard login rate limiter derives the client identity from the attacker-controlled X-Forwarded-For HTTP header. When 9router is directly exposed, or deployed behind a reverse proxy that does not overwrite untrusted forwarding headers, a remote attacker can rotate the...

9router: Login brute-force protection bypass via spoofed X-Forwarded-For header

Summary The 9router dashboard login rate limiter derives the client identity from the attacker-controlled X-Forwarded-For HTTP header. When 9router is directly exposed, or deployed behind a reverse proxy that does not overwrite untrusted forwarding headers, a remote attacker can rotate the...

PT-2026-56084

Name of the Vulnerable Software and Affected Versions 9Router versions prior to 0.4.80 Description The dashboard login rate limiter derives client identity from the X-Forwarded-For HTTP header, which is controlled by the user. When the application is directly exposed or deployed behind a reverse...

9router: Login brute-force protection bypass via spoofed X-Forwarded-For header

The 9router dashboard login rate limiter derives the client identity from the attacker-controlled X-Forwarded-For HTTP header. When 9router is directly exposed, or deployed behind a reverse proxy that does not overwrite untrusted forwarding headers, a remote attacker can rotate the X-Forwarded-Fo...

CVE-2026-57942

LibreTranslate (up to 1.9.7) contains an IP spoofing vulnerability in get_remote_address() that allows unauthenticated attackers to spoof client IPs via X-Forwarded-For values, bypassing per-IP rate limits and enabling unlimited API abuse. Fixed in commit 397fd22. Affected: LibreTranslate; remedi...

CVE-2026-57942

LibreTranslate through 1.9.7, fixed in commit 397fd22, contains an IP spoofing vulnerability in the getremoteaddress function that allows unauthenticated attackers to spoof client IP addresses by injecting arbitrary values into the X-Forwarded-For header without trusted proxy validation. Attacker...

GO-2026-5125 Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode in github.com/dadrus/heimdall

Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode in github.com/dadrus/heimdall...

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...

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...

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...