CVE-2026-55501

The CVE concerns 9router prior to version 0.4.80, where the login rate limiter uses client identity from the attacker-controlled X-Forwarded-For header in src/lib/auth/loginLimiter.js. This allows remote attackers to rotate X-Forwarded-For per attempt, creating a fresh rate-limit bucket each time...

CVE-2026-55501 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header

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...

PT-2026-56507

Name of the Vulnerable Software and Affected Versions Hono versions 4.3.3 through 4.12.26 Description The AWS API Gateway v1 adapter incorrectly de-duplicates repeated request header values by using a substring comparison instead of an exact match. This behavior can lead to the loss of distinct...

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

NPM: 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header vulnerability discovered by ? in WordPress Npm 9router versions = 0.4.71...

CVE-2026-57942 LibreTranslate - IP Spoofing via X-Forwarded-For Header

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...

CVE-2026-57942 LibreTranslate - IP Spoofing via X-Forwarded-For Header

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...

CVE-2026-54289

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on AWS Lambda@Edge, CloudFront delivers a request header that appears more than once as several separate entries. The adapter writes each value with Headers.set instead of Headers.append, so...

CVE-2026-54106 U.S. GAO EPDS and CBCA EDS network access control bypass

The U.S. Government Accountability Office GAO Electronic Protest Docketing System EPDS and Civilian Board of Contract Appeals CBCA Electronic Docketing System EDS do not validate X-Forwarded-For HTTP headers, allowing a remote attacker with compromised administrator credentials to bypass network...

CVE-2026-54106

CVE-2026-54106 affects the U.S. GAO EPDS and CBCA EDS login flow, where X-Forwarded-For headers are not validated. The underlying issue allows a remote attacker who has compromised administrator credentials to bypass network access controls and log in, potentially gaining access to restricted doc...

CVE-2026-34025

CVE-2026-34025 affects Wertheim SafeController Software (AssemblyVersion 6.15.8328.28014). The login flow derives the client IP from the HTTP X-Forwarded-For header when present, bypassing IP-based access restrictions tied to a branch location. An attacker with valid branch credentials can manipu...

CVE-2018-25349

userSpice 4.3.24 contains a cross-site scripting vulnerability that allows attackers to inject malicious scripts through the X-Forwarded-For HTTP header. Attackers can send crafted requests to the backup.php endpoint with XSS payloads in the X-Forwarded-For header that execute when administrators...

CVE-2018-25349 userSpice 4.3.24 Cross-Site Scripting via X-Forwarded-For Header

userSpice 4.3.24 contains a cross-site scripting vulnerability that allows attackers to inject malicious scripts through the X-Forwarded-For HTTP header. Attackers can send crafted requests to the backup.php endpoint with XSS payloads in the X-Forwarded-For header that execute when administrators...

CVE-2018-25349

userSpice 4.3.24 contains a cross-site scripting vulnerability that allows attackers to inject malicious scripts through the X-Forwarded-For HTTP header. Attackers can send crafted requests to the backup.php endpoint with XSS payloads in the X-Forwarded-For header that execute when administrators...

CVE-2026-2955

The AI Chatbot & Workflow Automation by AIWU plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'X-Forwarded-For' header in versions up to, and including, 1.4.14 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers...

PT-2026-42107

The AI Chatbot & Workflow Automation by AIWU plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'X-Forwarded-For' header in versions up to, and including, 1.4.14 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers...

Fleet has a rate limiting bypass via untrusted client IP headers

Impact Fleet trusted client-supplied IP address headers when determining the source IP for incoming requests. This allowed authenticated and unauthenticated clients to spoof their apparent IP address and bypass per-IP rate limiting controls. Fleet determines a client’s public IP address using HTT...

PT-2026-40968

Name of the Vulnerable Software and Affected Versions Fleet versions prior to 4.80.1 Description Fleet trusted client-supplied IP address headers when determining the source IP for incoming requests. This allowed authenticated and unauthenticated clients to spoof their apparent IP address and...

CVE-2026-44183

Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. Prior to 2.9.10, TrustedNetworkAuthenticationHandler.ResolveClientIp parses the leftmost entry of the X-Forwarded-For header as the client IP. That entr...

CVE-2026-44183 Cleanuparr: X-Forwarded-For leftmost parsing allows remote unauthenticated admin takeover when reverse-proxy mode is enabled

Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. Prior to 2.9.10, TrustedNetworkAuthenticationHandler.ResolveClientIp parses the leftmost entry of the X-Forwarded-For header as the client IP. That entr...

CLSA-2026-1777539404 squid34: Fix of 12 CVEs

CVE-2019-12525: fix heap buffer over-read in Digest auth parameter parsing - CVE-2018-1000027: fix NULL pointer dereference in X-Forwarded-For logging for internal transactions - CVE-2018-19131: escape certificate field injection via %D in ERRSECURECONNECTFAIL page - CVE-2018-19132: fix memory...