CWE-444— Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.— MITRE CWE catalog

344 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →

CVEs classified under CWE-444page 2 of 7

CVE-2020-11505HIGHCVSS 7.5EG 7.5
2020-04-22
An issue was discovered in GitLab Community Edition (CE) and Enterprise Edition (EE) before 12.7.9, 12.8.x before 12.8.9, and 12.9.x before 12.9.3. A Workhorse bypass could lead to NuGet package and file disclosure (Exposure of Sensitive I…
CVE-2020-11506HIGHCVSS 7.5EG 7.5
2020-04-22
An issue was discovered in GitLab 10.7.0 and later through 12.9.2. A Workhorse bypass could lead to job artifact uploads and file disclosure (Exposure of Sensitive Information) via request smuggling.
CVE-2020-11724HIGHCVSS 7.5EG 7.5
2020-04-12
An issue was discovered in OpenResty before 1.15.8.4. ngx_http_lua_subrequest.c allows HTTP request smuggling, as demonstrated by the ngx.location.capture API.
CVE-2020-11993HIGHCVSS 7.5EG 7.5
2020-08-07
Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring…
CVE-2020-15049CRITICALCVSS 9.9EG 9.9
2020-06-30
An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length head…
CVE-2020-15810MEDIUMCVSS 6.5EG 6.5
2020-09-02
An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, includin…
CVE-2020-17509HIGHCVSS 7.5EG 7.5
2021-01-11
ATS negative cache option is vulnerable to a cache poisoning attack. If you have this option enabled, please upgrade or disable this feature. Apache Traffic Server versions 7.0.0 to 7.1.11 and 8.0.0 to 8.1.0 are affected.
CVE-2020-1935MEDIUMCVSS 4.8EG 4.8
2020-02-24
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP R…
CVE-2020-1944CRITICALCVSS 9.8EG 9.8
2020-03-23
There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and Transfer-Encoding and Content length headers. Upgrade to versions 7.1.9 and 8.0.6 or later versions.
CVE-2020-25097HIGHCVSS 8.6EG 8.6
2021-03-19
An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occu…
CVE-2020-25613HIGHCVSS 7.5EG 7.5
2020-10-06
An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploi…
CVE-2020-26129MEDIUMCVSS 6.5EG 6.5
2020-11-16
In JetBrains Ktor before 1.4.1, HTTP request smuggling was possible.
CVE-2020-26281MEDIUMCVSS 6.8EG 6.8
2020-12-21
async-h1 is an asynchronous HTTP/1.1 parser for Rust (crates.io). There is a request smuggling vulnerability in async-h1 before version 2.3.0. This vulnerability affects any webserver that uses async-h1 behind a reverse proxy, including al…
CVE-2020-28361MEDIUMCVSS 5.4EG 5.4
2020-11-18
Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf function in…
CVE-2020-28473MEDIUMCVSS 6.8EG 6.8
2021-01-18
The package bottle from 0 and before 0.12.19 are vulnerable to Web Cache Poisoning by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the inter…
CVE-2020-28483HIGHCVSS 7.1EG 7.1
2021-01-20
This affects all versions of package github.com/gin-gonic/gin. When gin is exposed directly to the internet, a client's IP can be spoofed by setting the X-Forwarded-For header.
CVE-2020-35863CRITICALCVSS 9.8EG 9.8
2020-12-31
An issue was discovered in the hyper crate before 0.12.34 for Rust. HTTP request smuggling can occur. Remote code execution can occur in certain situations with an HTTP server on the loopback interface.
CVE-2020-35884MEDIUMCVSS 6.5EG 6.5
2020-12-31
An issue was discovered in the tiny_http crate through 2020-06-16 for Rust. HTTP Request smuggling can occur via a malformed Transfer-Encoding header.
CVE-2020-4896MEDIUMCVSS 6.5EG 6.5
2021-01-07
IBM Emptoris Sourcing 10.1.0, 10.1.1, and 10.1.3 is vulnerable to web cache poisoning, caused by improper input validation by modifying HTTP request headers. IBM X-Force ID: 190987.
CVE-2020-5129HIGHCVSS 7.5EG 7.5
2020-03-26
A vulnerability in the SonicWall SMA1000 HTTP Extraweb server allows an unauthenticated remote attacker to cause HTTP server crash which leads to Denial of Service. This vulnerability affected SMA1000 Version 12.1.0-06411 and earlier.
CVE-2020-5207MEDIUMCVSS 5.4EG 5.4
2020-01-27
In Ktor before 1.3.0, request smuggling is possible when running behind a proxy that doesn't handle Content-Length and Transfer-Encoding properly or doesn't handle \n as a headers separator.
CVE-2020-5218MEDIUMCVSS 4.4EG 4.4
2020-01-27
Affected versions of Sylius give attackers the ability to switch channels via the _channel_code GET parameter in production environments. This was meant to be enabled only when kernel.debug is set to true. However, if no sylius_channel.deb…
CVE-2020-5220MEDIUMCVSS 4.4EG 4.4
2020-01-27
Sylius ResourceBundle accepts and uses any serialisation groups to be passed via a HTTP header. This might lead to data exposure by using an unintended serialisation group - for example it could make Shop API use a more permissive group fr…
CVE-2020-5401MEDIUMCVSS 5.3EG 5.3
2020-02-27
Cloud Foundry Routing Release, versions prior to 0.197.0, contains GoRouter, which allows malicious clients to send invalid headers, causing caching layers to reject subsequent legitimate clients trying to access the app.
CVE-2020-7238HIGHCVSS 7.5EG 7.5
2020-01-27
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE…
CVE-2020-7611CRITICALCVSS 9.8EG 9.8
2020-03-30
All versions of io.micronaut:micronaut-http-client before 1.2.11 and all versions from 1.3.0 before 1.3.2 are vulnerable to HTTP Request Header Injection due to not validating request headers passed to the client.
CVE-2020-7655MEDIUMCVSS 6.1EG 6.1
2020-05-21
netius prior to 1.17.58 is vulnerable to HTTP Request Smuggling. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Transfer encoding header parsing which could allow for CL:TE or TE:TE attacks.
CVE-2020-7658MEDIUMCVSS 6.1EG 6.1
2020-05-22
meinheld prior to 1.0.2 is vulnerable to HTTP Request Smuggling. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing.
CVE-2020-7659HIGHCVSS 7.5EG 7.5
2020-06-01
reel through 0.6.1 allows Request Smuggling attacks due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, inv…
CVE-2020-7670HIGHCVSS 7.5EG 7.5
2020-06-10
agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Tr…
CVE-2020-7671HIGHCVSS 7.5EG 7.5
2020-06-10
goliath through 1.0.6 allows request smuggling attacks where goliath is used as a backend and a frontend proxy also being vulnerable. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furt…
CVE-2020-7764MEDIUMCVSS 5.9EG 5.9
2020-11-08
This affects the package find-my-way before 2.2.5, from 3.0.0 and before 3.0.5. It accepts the Accept-Version' header by default, and if versioned routes are not being used, this could lead to a denial of service. Accept-Version can be use…
CVE-2020-8201HIGHCVSS 7.4EG 7.4
2020-09-18
Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users. The payloads can be crafted by an attacker to hijack user sessions, poison cookies, perform clickjacking, a…
CVE-2020-8287MEDIUMCVSS 6.5EG 6.5
2021-01-06
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 sec…
CVE-2020-9490HIGHCVSS 7.5EG 7.5
2020-08-07
Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 f…
CVE-2021-1573HIGHCVSS 8.6EG 7.5
2022-01-11
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condit…
CVE-2021-20220MEDIUMCVSS 4.8EG 4.8
2021-02-23
A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw …
CVE-2021-21295MEDIUMCVSS 5.9EG 5.9
2021-03-09
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is …
CVE-2021-21299MEDIUMCVSS 4.8EG 4.8
2021-02-11
hyper is an open-source HTTP library for Rust (crates.io). In hyper from version 0.12.0 and before versions 0.13.10 and 0.14.3 there is a vulnerability that can enable a request smuggling attack. The HTTP server code had a flaw that incorr…
CVE-2021-21409MEDIUMCVSS 5.9EG 5.9
2021-03-30
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is …
CVE-2021-21445MEDIUMCVSS 5.4EG 5.4
2021-01-12
SAP Commerce Cloud, versions - 1808, 1811, 1905, 2005, 2011, allows an authenticated attacker to include invalidated data in the HTTP response Content Type header, due to improper input validation, and sent to a Web user. A successful expl…
CVE-2021-21966MEDIUMCVSS 5.3EG 5.3
2022-02-16
An information disclosure vulnerability exists in the HTTP Server /ping.html functionality of Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0. A specially-crafted HTTP request can lead to an uninitialized read. An attacker can sen…
CVE-2021-22293HIGHCVSS 7.5EG 7.5
2021-02-06
Some Huawei products have an inconsistent interpretation of HTTP requests vulnerability. Attackers can exploit this vulnerability to cause information leak. Affected product versions include: CampusInsight versions V100R019C10; ManageOne v…
CVE-2021-22959MEDIUMCVSS 6.5EG 6.5
2021-11-15
The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp < v2.1.4 and < v6.0.6.
CVE-2021-22960MEDIUMCVSS 6.5EG 6.5
2021-11-03
The parse function in llhttp < 2.1.4 and < 6.0.6. ignores chunk extensions when parsing the body of chunked requests. This leads to HTTP Request Smuggling (HRS) under certain conditions.
CVE-2021-23336MEDIUMCVSS 5.9EG 5.9
2021-02-15
The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using…
CVE-2021-23339MEDIUMCVSS 5.0EG 5.0
2021-02-17
This affects all versions before 10.1.14 and from 10.2.0 to 10.2.4 of package com.typesafe.akka:akka-http-core. It allows multiple Transfer-Encoding headers.
CVE-2021-25220MEDIUMCVSS 6.8EG 8.6
2022-03-23
BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - …
CVE-2021-25762MEDIUMCVSS 5.3EG 5.3
2021-02-03
In JetBrains Ktor before 1.4.3, HTTP Request Smuggling was possible.
CVE-2021-27577HIGHCVSS 7.5EG 7.5
2021-06-29
Incorrect handling of url fragment vulnerability of Apache Traffic Server allows an attacker to poison the cache. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.

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