HTTP Request Smuggling

Http4s is vulnerable to HTTP Request Smuggling. The vulnerability is due to inconsistent HTTP message body framing between Ember and an intermediary when both headers are present, which allows an attacker to smuggle a second request, bypass access controls, poison caches, or cause a victim reques...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the readLoop process. An attacker can exhaust system memory by sending HTTP/2 frames with a declared payload size significantly larger than the configured maximum, causing the server or client to buffer excessiv...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the readLoop process. An attacker can exhaust system memory by sending HTTP/2 frames with a declared payload size significantly larger than the configured maximum, causing the server or client to buffer excessiv...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the readLoop process. An attacker can exhaust system memory by sending HTTP/2 frames with a declared payload size significantly larger than the configured maximum, causing the server or client to buffer excessiv...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS through the WebSocket decoder process. An attacker can exhaust server memory by sending oversized frames or fragmented messages without size limits. Details Denial of Service DoS describes a family of attacks, all...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS through the WebSocket decoder process. An attacker can exhaust server memory by sending oversized frames or fragmented messages without size limits. Details Denial of Service DoS describes a family of attacks, all...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS through the WebSocket decoder process. An attacker can exhaust server memory by sending oversized frames or fragmented messages without size limits. Details Denial of Service DoS describes a family of attacks, all...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS due to the unbounded queue used for outbound HTTP/2 frames. An attacker can exhaust server memory by continuously sending frames that trigger the server to enqueue responses faster than they are processed. Workarou...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS due to the unbounded queue used for outbound HTTP/2 frames. An attacker can exhaust server memory by continuously sending frames that trigger the server to enqueue responses faster than they are processed. Workarou...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS due to the unbounded queue used for outbound HTTP/2 frames. An attacker can exhaust server memory by continuously sending frames that trigger the server to enqueue responses faster than they are processed. Workarou...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling due to lenient parsing in the chunk decoder process. An attacker can bypass intermediary controls, poison caches, or hijack the request queue by crafting specially formatted chunked requests that exploit differenc...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling due to lenient parsing in the chunk decoder process. An attacker can bypass intermediary controls, poison caches, or hijack the request queue by crafting specially formatted chunked requests that exploit differenc...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling due to lenient parsing in the chunk decoder process. An attacker can bypass intermediary controls, poison caches, or hijack the request queue by crafting specially formatted chunked requests that exploit differenc...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HTTP message parsing process. An attacker can bypass intermediary access controls, poison caches, or cause victim requests to be joined with attacker-controlled prefixes by sending requests containing both...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HTTP message parsing process. An attacker can bypass intermediary access controls, poison caches, or cause victim requests to be joined with attacker-controlled prefixes by sending requests containing both...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HTTP message parsing process. An attacker can bypass intermediary access controls, poison caches, or cause victim requests to be joined with attacker-controlled prefixes by sending requests containing both...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HeaderP.parse process. An attacker can bypass access controls, hijack cross-user requests, or poison server caches by crafting HTTP requests with specially formatted Transfer-Encoding header values that...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HeaderP.parse process. An attacker can bypass access controls, hijack cross-user requests, or poison server caches by crafting HTTP requests with specially formatted Transfer-Encoding header values that...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HTTP/1.1 parsing process. An attacker can bypass front-end controls, capture another user's headers, or poison a cache by sending requests with differing duplicate Content-Length headers, especially when th...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HTTP/1.1 parsing process. An attacker can bypass front-end controls, capture another user's headers, or poison a cache by sending requests with differing duplicate Content-Length headers, especially when th...