ExponentCMS <= 2.6 - Host Header Injection

An HTTP Host header attack exists in ExponentCMS 2.6 and below in /exponentconstants.php. A modified HTTP header can change links on the webpage to an arbitrary value,leading to a possible attack vector for MITM. id: CVE-2021-38751 info: name: ExponentCMS = 2.6 - Host Header Injection author:...

SUSE CVE-2026-53523

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the getRedirectURL function in oauth2.go:22-29 constructs the OAuth2 callback URL by concatenating the request's Host header with a fixed path, with zero...

Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.

Summary Poweradmin v4.3.2 uses the attacker-controlled HTTPHOST request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An unauthenticated attacker can poison the redirecturi sent to the Identity Provider,...

Ruby on Rails - Open Redirect via Host Header Injection

Ruby on Rails action pack before 6.1.2.1, 6.0.3.5 contains an open redirect caused by special crafted Host headers in combination with allowed host formats, letting attackers redirect users to malicious websites, exploit requires attacker to control Host headers. id: CVE-2021-22881 info: name: Ru...

GO-2026-5829 Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection in github.com/nezhahq/nezha

Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection in github.com/nezhahq/nezha. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability...

PYSEC-2026-1055 Twisted vulnerable to NameVirtualHost Host header injection

When the host header does not match a configured host, twisted.web.vhost.NameVirtualHost will return a NoResource resource which renders the Host header unescaped into the 404 response allowing HTML and script injection. Example configuration: python from twisted.web.server import Site from...

EUVD-2026-36602

Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection...

CVE-2026-54588

Poweradmin (for PowerDNS) is affected by a Host Header Injection vulnerability in auth flows. Versions prior to 4.2.4 and 4.3.3 use the HTTP_HOST header as the authoritative source for building OIDC redirect_uri, SAML ACS/SLO URLs, and logout redirects without validation. An unauthenticated attac...

CVE-2026-54588 Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.

Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 use the attacker-controlled HTTPHOST request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An...

CVE-2026-54588 Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.

Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 use the attacker-controlled HTTPHOST request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An...

CVE-2026-49468 LiteLLM: Authentication Bypass via Host Header Injection

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, a Host-header parsing flaw in the LiteLLM proxy could, under specific conditions, allow unauthenticated access to protected management routes. The auth layer derived the effective route from...

CVE-2026-49468 LiteLLM: Authentication Bypass via Host Header Injection

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, a Host-header parsing flaw in the LiteLLM proxy could, under specific conditions, allow unauthenticated access to protected management routes. The auth layer derived the effective route from...

CVE-2026-49468 LiteLLM: Authentication Bypass via Host Header Injection

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, a Host-header parsing flaw in the LiteLLM proxy could, under specific conditions, allow unauthenticated access to protected management routes. The auth layer derived the effective route from...

EUVD-2024-55644

IBM Engineering Workflow Management 7.0.2 through 7.0.2 Interim Fix 035, 7.0.3 through 7.0.3 Interim Fix 017, and 7.1 through 7.1 Interim Fix 004 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various...

CVE-2024-51454

Affected product: IBM Engineering Workflow Management (part of IBM Engineering Lifecycle Management). The vulnerability is a free-form HTTP header injection in HOST header parsing due to input validation weaknesses. Affected versions are 7.0.2 (with Interim Fix 035), 7.0.3 (IFix 017), and 7.1 (IF...

CVE-2024-51454 IBM Engineering Lifecycle Management - Engineering Workflow Management is impacted by vulnerabilities Host Header Injection observed

IBM Engineering Workflow Management 7.0.2 through 7.0.2 Interim Fix 035, 7.0.3 through 7.0.3 Interim Fix 017, and 7.1 through 7.1 Interim Fix 004 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various...

Security Bulletin: IBM Engineering Lifecycle Management - Engineering Workflow Management is impacted by vulnerabilities Host Header Injection observed

Summary Vulnerabilities have been identified in Host Header Injection , which is used in IBM Engineering Lifecycle Management -Engineering Workflow Management Vulnerability Details CVEID:CVE-2024-51454 DESCRIPTION: IBM Engineering Workflow Management is vulnerable to HTTP header injection, caused...

CVE-2025-32748

Dell PowerFlex Manager, versions prior to 5.1.0.1, contains a Host Header Injection vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability to trigger redirections...

CVE-2025-32748

Dell PowerFlex Manager, versions prior to 5.1.0.1, contains a Host Header Injection vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability to trigger redirections...

CVE-2025-32748

Dell PowerFlex Manager, versions prior to 5.1.0.1, contains a Host Header Injection vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability to trigger redirections...