CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Description
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.
Hierarchy (View 1000)
Parents
Children
none
Related attack patterns (CAPEC)
CAPEC-273 · CAPEC-33
CVEs mapped to this weakness (386)
page 1 of 20| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2022-22536 | Cri | 0.88 | 10.0 | 0.98 | KEV | Feb 9, 2022 | SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary… | |
| CVE-2023-41265 | Cri | 0.87 | 9.6 | 0.84 | KEV | Aug 29, 2023 | An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their… | |
| CVE-2023-48365 | Cri | 0.82 | 9.6 | 0.25 | KEV | Nov 15, 2023 | Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attacker is able to elevate their privilege by tunneling HTTP requests, allowing them to execute HTTP… | |
| CVE-2025-61884 | Hig | 0.75 | 7.5 | 0.98 | KEV | Oct 12, 2025 | Vulnerability in the Oracle Configurator product of Oracle E-Business Suite (component: Runtime UI). Supported versions that are affected are 12.2.3-12.2.14. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle… | |
| CVE-2023-25690 | Cri | 0.70 | 9.8 | 0.84 | Mar 7, 2023 | Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some… | ||
| CVE-2021-30180 | Cri | 0.69 | 9.8 | 0.60 | Jun 1, 2021 | Apache Dubbo prior to 2.7.9 support Tag routing which will enable a customer to route the request to the right server. These rules are used by the customers when making a request in order to find the right endpoint. When parsing these YAML rules, Dubbo customers may enable… | ||
| CVE-2019-15605 | Cri | 0.68 | 9.8 | 0.57 | Feb 7, 2020 | HTTP request smuggling in Node.js 10, 12, and 13 causes malicious payload delivery when transfer-encoding is malformed | ||
| CVE-2025-55315 | Cri | 0.66 | 9.9 | 0.66 | Oct 14, 2025 | Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network. | ||
| CVE-2022-22720 | Cri | 0.66 | 9.8 | 0.28 | Mar 14, 2022 | Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling | ||
| CVE-2025-1867 | Cri | 0.65 | — | 0.00 | Mar 3, 2025 | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3. | ||
| CVE-2020-15049 | Cri | 0.65 | 9.9 | 0.06 | Jun 30, 2020 | 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 header containing "+\ "-" or an uncommon… | ||
| CVE-2018-3907 | Cri | 0.65 | 10.0 | 0.01 | Aug 24, 2018 | An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The video-core process incorrectly handles pipelined HTTP requests, which allows successive requests to overwrite the… | ||
| CVE-2017-7658 | Cri | 0.65 | 9.8 | 0.21 | Jun 26, 2018 | In Eclipse Jetty Server, versions 9.2.x and older, 9.3.x (all non HTTP/1.x configurations), and 9.4.x (all HTTP/1.x configurations), when presented with two content-lengths headers, Jetty ignored the second. When presented with a content-length and a chunked encoding header, the… | ||
| CVE-2017-7657 | Cri | 0.65 | 9.8 | 0.16 | Jun 26, 2018 | In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled), transfer-encoding chunks are handled poorly. The chunk length parsing was vulnerable to an integer overflow. Thus a large chunk size… | ||
| CVE-2026-41873 | Cri | 0.64 | 9.8 | 0.00 | Apr 28, 2026 | ** UNSUPPORTED WHEN ASSIGNED ** Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Pony Mail leading to admin account takeover. This issue affects all versions of the Lua implementation of Pony Mail. There is a Python… | ||
| CVE-2026-4700 | Cri | 0.64 | 9.8 | 0.00 | Mar 24, 2026 | Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | ||
| CVE-2025-56266 | Cri | 0.64 | 9.8 | 0.03 | Sep 8, 2025 | A Host Header Injection vulnerability in Avigilon ACM v7.10.0.20 allows attackers to execute arbitrary code via supplying a crafted URL. | ||
| CVE-2024-10264 | Cri | 0.64 | 9.8 | 0.01 | Mar 20, 2025 | HTTP Request Smuggling vulnerability in netease-youdao/qanything version 1.4.1 allows attackers to exploit inconsistencies in the interpretation of HTTP requests between a proxy and a server. This can lead to unauthorized access, bypassing security controls, session hijacking,… | ||
| CVE-2024-27922 | Cri | 0.64 | 9.8 | 0.01 | Mar 21, 2024 | TOMP Bare Server implements the TompHTTP bare server. A vulnerability in versions prior to 2.0.2 relates to insecure handling of HTTP requests by the @tomphttp/bare-server-node package. This flaw potentially exposes the users of the package to manipulation of their web traffic.… | ||
| CVE-2024-22081 | Cri | 0.64 | 9.8 | 0.01 | Mar 20, 2024 | An issue was discovered in Elspec G5 digital fault recorder versions 1.1.4.15 and before. Unauthenticated memory corruption can occur in the HTTP header parsing mechanism. |
- risk 0.88cvss 10.0epss 0.98
SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary…
- risk 0.87cvss 9.6epss 0.84
An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their…
- risk 0.82cvss 9.6epss 0.25
Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attacker is able to elevate their privilege by tunneling HTTP requests, allowing them to execute HTTP…
- risk 0.75cvss 7.5epss 0.98
Vulnerability in the Oracle Configurator product of Oracle E-Business Suite (component: Runtime UI). Supported versions that are affected are 12.2.3-12.2.14. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle…
- risk 0.70cvss 9.8epss 0.84
Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some…
- risk 0.69cvss 9.8epss 0.60
Apache Dubbo prior to 2.7.9 support Tag routing which will enable a customer to route the request to the right server. These rules are used by the customers when making a request in order to find the right endpoint. When parsing these YAML rules, Dubbo customers may enable…
- risk 0.68cvss 9.8epss 0.57
HTTP request smuggling in Node.js 10, 12, and 13 causes malicious payload delivery when transfer-encoding is malformed
- risk 0.66cvss 9.9epss 0.66
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.
- risk 0.66cvss 9.8epss 0.28
Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling
- risk 0.65cvss —epss 0.00
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows HTTP Response Smuggling.This issue affects libhv: through 1.3.3.
- risk 0.65cvss 9.9epss 0.06
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 header containing "+\ "-" or an uncommon…
- risk 0.65cvss 10.0epss 0.01
An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The video-core process incorrectly handles pipelined HTTP requests, which allows successive requests to overwrite the…
- risk 0.65cvss 9.8epss 0.21
In Eclipse Jetty Server, versions 9.2.x and older, 9.3.x (all non HTTP/1.x configurations), and 9.4.x (all HTTP/1.x configurations), when presented with two content-lengths headers, Jetty ignored the second. When presented with a content-length and a chunked encoding header, the…
- risk 0.65cvss 9.8epss 0.16
In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled), transfer-encoding chunks are handled poorly. The chunk length parsing was vulnerable to an integer overflow. Thus a large chunk size…
- risk 0.64cvss 9.8epss 0.00
** UNSUPPORTED WHEN ASSIGNED ** Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Pony Mail leading to admin account takeover. This issue affects all versions of the Lua implementation of Pony Mail. There is a Python…
- risk 0.64cvss 9.8epss 0.00
Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
- risk 0.64cvss 9.8epss 0.03
A Host Header Injection vulnerability in Avigilon ACM v7.10.0.20 allows attackers to execute arbitrary code via supplying a crafted URL.
- risk 0.64cvss 9.8epss 0.01
HTTP Request Smuggling vulnerability in netease-youdao/qanything version 1.4.1 allows attackers to exploit inconsistencies in the interpretation of HTTP requests between a proxy and a server. This can lead to unauthorized access, bypassing security controls, session hijacking,…
- risk 0.64cvss 9.8epss 0.01
TOMP Bare Server implements the TompHTTP bare server. A vulnerability in versions prior to 2.0.2 relates to insecure handling of HTTP requests by the @tomphttp/bare-server-node package. This flaw potentially exposes the users of the package to manipulation of their web traffic.…
- risk 0.64cvss 9.8epss 0.01
An issue was discovered in Elspec G5 digital fault recorder versions 1.1.4.15 and before. Unauthenticated memory corruption can occur in the HTTP header parsing mechanism.