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CWE-644

58 CVEs • Abstraction: Variant • Likelihood of Exploit: High

Improper Neutralization of HTTP Headers for Scripting Syntax

The product does not neutralize or incorrectly neutralizes web scripting syntax in HTTP headers that can be used by web browser components that can process raw headers, such as Flash.

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CVEs (58)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Coollabs
1Coolify
Jun 17, 2026
Jan 5, 2026
8.5 HIGH· v4
8.1 HIGH· v3
N/A· v2
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. In Coolify versions up to and including v4.0.0-beta.434, an attacker can initiate a password reset for a victim, and mod...Show more
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. In Coolify versions up to and including v4.0.0-beta.434, an attacker can initiate a password reset for a victim, and modify the host header of the request to a malicious value. The victim will receive a password reset email, with a link to the malicious host. If the victim clicks this link, their reset token is sent to the attacker's server, allowing the attacker to use it to change the victim's password and takeover their account. As of time of publication, it is unclear if a patch is available.Show less
1Tornadoweb
1Tornado
Jun 17, 2026
Dec 12, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in...Show more
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.Show less
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Jun 17, 2026
Dec 1, 2025
6.9 MEDIUM· v4
7.3 HIGH· v3
7.5 HIGH· v2
A vulnerability was identified in MediaCrush 1.0.0/1.0.1. The affected element is an unknown function of the file /mediacrush/paths.py of the component Header Handler. Such manipulation of the argument Host leads to impr...Show more
A vulnerability was identified in MediaCrush 1.0.0/1.0.1. The affected element is an unknown function of the file /mediacrush/paths.py of the component Header Handler. Such manipulation of the argument Host leads to improper neutralization of http headers for scripting syntax. The attack can be launched remotely.Show less
1Jameschz
1Hush
Jun 17, 2026
Nov 20, 2025
5.5 MEDIUM· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A weakness has been identified in jameschz Hush Framework 2.0. The impacted element is an unknown function of the file Hush\hush-lib\hush\Util.php of the component HTTP Host Header Handler. This manipulation of the argum...Show more
A weakness has been identified in jameschz Hush Framework 2.0. The impacted element is an unknown function of the file Hush\hush-lib\hush\Util.php of the component HTTP Host Header Handler. This manipulation of the argument $_SERVER['HOST'] causes improper neutralization of http headers for scripting syntax. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be exploited. The vendor was contacted early about this disclosure but did not respond in any way.Show less
1Ibm
1Openpages
Jun 17, 2026
Nov 12, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
IBM OpenPages 9.0 and 9.1 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, includi...Show more
IBM OpenPages 9.0 and 9.1 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.Show less
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Jun 17, 2026
Nov 10, 2025
N/A· v4
8.5 HIGH· v3
N/A· v2
OAuth2-Proxy is an open-source tool that can act as either a standalone reverse proxy or a middleware component integrated into existing reverse proxy or load balancer setups. In versions prior to 7.13.0, all deployments...Show more
OAuth2-Proxy is an open-source tool that can act as either a standalone reverse proxy or a middleware component integrated into existing reverse proxy or load balancer setups. In versions prior to 7.13.0, all deployments of OAuth2 Proxy in front of applications that normalize underscores to dashes in HTTP headers (e.g., WSGI-based frameworks such as Django, Flask, FastAPI, and PHP applications). Authenticated users can inject underscore variants of X-Forwarded-* headers that bypass the proxy’s filtering logic, potentially escalating privileges in the upstream app. OAuth2 Proxy authentication/authorization itself is not compromised. The problem has been patched with v7.13.0. By default all specified headers will now be normalized, meaning that both capitalization and the use of underscores (_) versus dashes (-) will be ignored when matching headers to be stripped. For example, both `X-Forwarded-For` and `X_Forwarded-for` will now be treated as equivalent and stripped away. For those who have a rational that requires keeping a similar looking header and not stripping it, the maintainers introduced a new configuration field for Headers managed through the AlphaConfig called `InsecureSkipHeaderNormalization`. As a workaround, ensure filtering and processing logic in upstream services don't treat underscores and hyphens in Headers the same way.Show less
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Jun 17, 2026
Oct 10, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
The BigFix WebUI application responds with HOST information from the HTTP header field making it vulnerable to Host Header Poisoning Attacks.
1Ibm
1Smartcloud Analytics Log Analysis
Jun 17, 2026
Jul 23, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
IBM SmartCloud Analytics - Log Analysis 1.3.7.0, 1.3.7.1, 1.3.7.2, 1.3.8.0, 1.3.8.1, and 1.3.8.2 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an att...Show more
IBM SmartCloud Analytics - Log Analysis 1.3.7.0, 1.3.7.1, 1.3.7.2, 1.3.8.0, 1.3.8.1, and 1.3.8.2 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.Show less
1Icewarp
1Mail Server
Jun 17, 2026
May 16, 2025
2.0 LOW· v4
6.1 MEDIUM· v3
N/A· v2
HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact...Show more
HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.Show less
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Jun 17, 2026
Apr 30, 2025
N/A· v4
5.0 MEDIUM· v3
N/A· v2
A vulnerability in the web application of ctrlX OS allows a remote unauthenticated attacker to conduct various attacks against users of the vulnerable system, including web cache poisoning or Man-in-the-Middle (MitM), vi...Show more
A vulnerability in the web application of ctrlX OS allows a remote unauthenticated attacker to conduct various attacks against users of the vulnerable system, including web cache poisoning or Man-in-the-Middle (MitM), via a crafted HTTP request.Show less
1Ibm
1I
Jun 17, 2026
Apr 18, 2025
N/A· v4
5.4 MEDIUM· v3
N/A· v2
IBM i 7.3, 7.4, 7.5, and 7.5 is vulnerable to a host header injection attack caused by improper neutralization of HTTP header content by IBM Navigator for i. An authenticated user can manipulate the host header in HTTP r...Show more
IBM i 7.3, 7.4, 7.5, and 7.5 is vulnerable to a host header injection attack caused by improper neutralization of HTTP header content by IBM Navigator for i. An authenticated user can manipulate the host header in HTTP requests to change domain/IP address which may lead to unexpected behavior.Show less
1Ibm
1Aspera Console
Jun 17, 2026
Apr 14, 2025
N/A· v4
5.4 MEDIUM· v3
N/A· v2
IBM Aspera Console 3.4.0 through 3.4.4 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable...Show more
IBM Aspera Console 3.4.0 through 3.4.4 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.Show less
1Ibm
1Txseries For Multiplatforms
Jun 17, 2026
Apr 2, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
IBM TXSeries for Multiplatforms 9.1 and 11.1 could disclose sensitive information to a remote attacker due to improper neutralization of HTTP headers.
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Jun 17, 2026
Mar 25, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
A Host Header Injection vulnerability in TRMTracker application may allow an attacker by modifying the host header value in an HTTP request to leverage multiple attack vectors, including defacing the site content through...Show more
A Host Header Injection vulnerability in TRMTracker application may allow an attacker by modifying the host header value in an HTTP request to leverage multiple attack vectors, including defacing the site content through web-cache poisoning.Show less
1Ibm
1Sterling Control Center
Jun 17, 2026
Mar 7, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
IBM Control Center 6.2.1 through 6.3.1 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable sy...Show more
IBM Control Center 6.2.1 through 6.3.1 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.Show less
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-
Jun 17, 2026
Feb 11, 2025
N/A· v4
3.1 LOW· v3
N/A· v2
Cached values belonging to the SAP OData endpoint in SAP Fiori for SAP ERP could be poisoned by modifying the Host header value in an HTTP GET request. An attacker could alter the `atom:link` values in the returned metad...Show more
Cached values belonging to the SAP OData endpoint in SAP Fiori for SAP ERP could be poisoned by modifying the Host header value in an HTTP GET request. An attacker could alter the `atom:link` values in the returned metadata redirecting them from the SAP server to a malicious link set by the attacker. Successful exploitation could cause low impact on integrity of the application.Show less
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Jun 17, 2026
Jan 31, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
A Host header injection vulnerability exists in CTFd 3.7.5, due to the application failing to properly validate or sanitize the Host header. An attacker can manipulate the Host header in HTTP requests, which may lead to...Show more
A Host header injection vulnerability exists in CTFd 3.7.5, due to the application failing to properly validate or sanitize the Host header. An attacker can manipulate the Host header in HTTP requests, which may lead to phishing attacks, reset password, or cache poisoning. NOTE: the Supplier's position is that the end user is supposed to edit the NGINX configuration template to set server_name (with this setting, Host header injection cannot occur).Show less
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Jun 17, 2026
Dec 6, 2024
N/A· v4
5.3 MEDIUM· v3
N/A· v2
The HTTP host header can be manipulated and cause the application to behave in unexpected ways. Any changes made to the header would cause the request to be sent to a completely different domain/IP address.
1Hashicorp
1Consul
Jun 17, 2026
Oct 30, 2024
N/A· v4
5.8 MEDIUM· v3
N/A· v2
A vulnerability was identified in Consul and Consul Enterprise (“Consul”) such that using Headers in L7 traffic intentions could bypass HTTP header based access rules.
2Sharp
Toshibatec
320Bp 30c25 Firmware
Bp 30c25t FirmwareBp 30c25y Firmware+317 more
Jun 17, 2026
Oct 25, 2024
N/A· v4
6.1 MEDIUM· v3
N/A· v2
Sharp and Toshiba Tec MFPs improperly process query parameters in HTTP requests, which may allow contamination of unintended data to HTTP response headers. Accessing a crafted URL which points to an affected product may...Show more
Sharp and Toshiba Tec MFPs improperly process query parameters in HTTP requests, which may allow contamination of unintended data to HTTP response headers. Accessing a crafted URL which points to an affected product may cause malicious script executed on the web browser.Show less