CVE-2025-14550 Potential denial-of-service vulnerability via repeated headers when using ASGI

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. ASGIRequest allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. Earlier, unsupported Django series such as 5.0.x, 4.1.x, and 3.2.x were not...

CVE-2025-14550

The Django web framework is vulnerable to a denial-of-service (DoS) attack due to an algorithmic complexity issue. The ASGIRequest component fails to properly handle crafted requests containing multiple duplicate headers , which can trigger service failures. Affected versions include 6.0 before 6...

EUVD-2025-206739

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. ASGIRequest allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. Earlier, unsupported Django series such as 5.0.x, 4.1.x, and 3.2.x were not...

CVE-2025-14550

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. ASGIRequest allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. Earlier, unsupported Django series such as 5.0.x, 4.1.x, and 3.2.x were not...

UBUNTU-CVE-2025-14550

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. ASGIRequest allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. Earlier, unsupported Django series such as 5.0.x, 4.1.x, and 3.2.x were not...

CVE-2025-14550: Inefficient Algorithmic Complexity

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. ASGIRequest allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. Earlier, unsupported Django series such as 5.0.x, 4.1.x, and 3.2.x were not...

PT-2026-5880

Name of the Vulnerable Software and Affected Versions Django versions 6.0 through 6.0.1 Django versions 5.2 through 5.2.10 Django versions 4.2 through 4.2.27 Django versions 5.0.x and earlier Django versions 4.1.x and earlier Django versions 3.2.x and earlier Description The ASGIRequest component...

libsoup: libsoup: Duplicate Host Header Handling Causes Host-Parsing Discrepancy (First- vs Last-Value Wins)

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the...

CLSA-2026-1769598671 libsoup: Fix of CVE-2025-14523

CVE-2025-14523: reject duplicate Host headers to prevent request smuggling, cache poisoning, and host-based access control bypass attacks...

libsoup: libsoup: Duplicate Host Header Handling Causes Host-Parsing Discrepancy (First- vs Last-Value Wins)

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the...

libsoup: libsoup: Duplicate Host Header Handling Causes Host-Parsing Discrepancy (First- vs Last-Value Wins)

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the...

libsoup: libsoup: Duplicate Host Header Handling Causes Host-Parsing Discrepancy (First- vs Last-Value Wins)

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the...

libsoup: libsoup: Duplicate Host Header Handling Causes Host-Parsing Discrepancy (First- vs Last-Value Wins)

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the...

BIT-NODE-MIN-2020-8287

Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 allow two copies of a header field in an HTTP request for example, two Transfer-Encoding header fields. In this case, Node.js identifies the first header field and ignores the second. This can lead to HTTP Request Smuggling...

USN-7031-1 puma vulnerability

It was discovered that Puma incorrectly handled parsing certain headers. A remote attacker could possibly use this issue to overwrite header values set by intermediate proxies by providing duplicate headers containing underscore characters...

How to delete duplicate HSTS header

Explain how to eliminate the duplicate HSTS header Duplicated header HSTS Why? it could come from a backend server, and also being applied from the ADC Vserver configuration, so we need to decide which header to keep. In this case, the client wants to delete the HSTS header coming from the server...

SUSE CVE-2007-3947

request.c in lighttpd 1.4.15 allows remote attackers to cause a denial of service daemon crash by sending an HTTP request with duplicate headers, as demonstrated by a request containing two Location header lines, which results in a segmentation fault...

SUSE CVE-2008-4298

Memory leak in the httprequestparse function in request.c in lighttpd before 1.4.20 allows remote attackers to cause a denial of service memory consumption via a large number of requests with duplicate request headers...

SUSE CVE-2020-8287

Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 allow two copies of a header field in an HTTP request for example, two Transfer-Encoding header fields. In this case, Node.js identifies the first header field and ignores the second. This can lead to HTTP Request Smuggling...

CVE-2021-41130

Extensible Service Proxy, a.k.a. ESP is a proxy which enables API management capabilities for JSON/REST or gRPC API services. ESPv1 can be configured to authenticate a JWT token. Its verified JWT claim is passed to the application by HTTP header "X-Endpoint-API-UserInfo", the application can use ...