VYPR

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

BaseIncomplete

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)

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  • CVE-2020-5401MedFeb 27, 2020
    risk 0.35cvss 5.3epss 0.01

    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-2017-12158MedOct 26, 2017
    risk 0.35cvss 5.4epss 0.01

    It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.

  • CVE-2026-14180MedAug 11, 2026
    risk 0.34cvss 5.3epss 0.00

    A flaw was found in the ChunkReader component of the Undertow HTTP server, which is used by WildFly and JBoss EAP to handle chunked transfer encoding. The issue occurs because the parser uses a single internal variable to store both the remaining chunk size and state flags. By…

  • CVE-2026-69243MedAug 3, 2026
    risk 0.34cvss epss 0.00

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request…

  • CVE-2026-59900MedJul 29, 2026
    risk 0.34cvss 5.3epss 0.00

    Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer (`Http2StreamFrameToHttpObjectCodec` and `InboundHttp2ToHttpAdapter`) fails to deduplicate or validate `Host`…

  • CVE-2026-50020MedJun 12, 2026
    risk 0.34cvss 5.3epss 0.00

    Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, `HttpObjectDecoder` skips every byte for which `Character.isISOControl(b)` is `true` (0x00–0x1F…

  • CVE-2026-41853MedJun 9, 2026
    risk 0.34cvss 5.3epss 0.00

    Spring MVC and WebFlux applications are vulnerable to Multipart request smuggling attacks. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

  • CVE-2026-49753MedJun 2, 2026
    risk 0.34cvss epss 0.00

    Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in elixir-mint Mint allows attacker-controlled HTTP/1 servers to desynchronise response framing on shared connections. Mint's HTTP/1 Content-Length parser,…

  • CVE-2026-41417MedMay 6, 2026
    risk 0.34cvss 5.3epss 0.00

    Netty allows request-line validation to be bypassed when a `DefaultHttpRequest` or `DefaultFullHttpRequest` is created first and its URI is later changed via `setUri()`. The constructors reject CRLF and whitespace characters that would break the start-line, but `setUri()` does…

  • CVE-2026-39805MedMay 1, 2026
    risk 0.34cvss epss 0.01

    Inconsistent Interpretation of HTTP Requests vulnerability in mtrudel bandit allows HTTP request smuggling via duplicate Content-Length headers. 'Elixir.Bandit.Headers':get_content_length/1 in lib/bandit/headers.ex uses List.keyfind/3, which returns only the first matching…

  • CVE-2026-2862MedApr 1, 2026
    risk 0.34cvss 5.3epss 0.00

    IBM Verify Identity Access Container 11.0 through 11.0.2 and IBM Security Verify Access Container 10.0 through 10.0.9.1 and IBM Verify Identity Access 11.0 through 11.0.2 and IBM Security Verify Access 10.0 through 10.0.9.1 IBM Security Verify could allow a remote attacker to…

  • CVE-2026-1491MedApr 1, 2026
    risk 0.34cvss 5.3epss 0.00

    IBM Verify Identity Access Container 11.0 through 11.0.2 and IBM Security Verify Access Container 10.0 through 10.0.9.1 and IBM Verify Identity Access 11.0 through 11.0.2 and IBM Security Verify Access 10.0 through 10.0.9.1 IBM Security Verify could allow a remote attacker to…

  • CVE-2026-1801MedFeb 3, 2026
    risk 0.34cvss 5.3epss 0.00

    A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soup_filter_input_stream_read_line() logic, where libsoup accepts malformed chunk headers, such as lone line feed (LF) characters…

  • CVE-2026-1760MedFeb 2, 2026
    risk 0.34cvss 5.3epss 0.00

    A flaw was found in SoupServer. This HTTP request smuggling vulnerability occurs because SoupServer improperly handles requests that combine Transfer-Encoding: chunked and Connection: keep-alive headers. A remote, unauthenticated client can exploit this by sending specially…

  • CVE-2025-29904MedMar 12, 2025
    risk 0.34cvss 5.3epss 0.00

    In JetBrains Ktor before 3.1.1 an HTTP Request Smuggling was possible

  • CVE-2024-21281MedOct 15, 2024
    risk 0.34cvss 5.3epss 0.00

    Vulnerability in the Oracle Banking Liquidity Management product of Oracle Financial Services Applications (component: Infrastructure). The supported version that is affected is 14.7.0.6.0. Difficult to exploit vulnerability allows high privileged attacker with network access…

  • CVE-2024-35538MedAug 19, 2024
    risk 0.34cvss 5.3epss 0.01

    Typecho v1.3.0 was discovered to contain a Client IP Spoofing vulnerability, which allows attackers to falsify their IP addresses by specifying an arbitrary IP as value of X-Forwarded-For or Client-Ip headers while performing HTTP requests.

  • CVE-2016-15039MedJul 11, 2024
    risk 0.34cvss 6.3epss 0.00

    A vulnerability classified as critical was found in mhuertos phpLDAPadmin up to 665dbc2690ebeb5392d38f1fece0a654225a0b38. Affected by this vulnerability is the function makeHttpRequest of the file htdocs/js/ajax_functions.js. The manipulation leads to http request smuggling. The…

  • CVE-2024-24795MedApr 4, 2024
    risk 0.34cvss 6.3epss 0.03

    HTTP Response splitting in multiple modules in Apache HTTP Server allows an attacker that can inject malicious response headers into backend applications to cause an HTTP desynchronization attack. Users are recommended to upgrade to version 2.4.59, which fixes this issue.

  • CVE-2024-20915MedFeb 17, 2024
    risk 0.34cvss 5.3epss 0.00

    Vulnerability in the Oracle Application Object Library product of Oracle E-Business Suite (component: Login - SSO). Supported versions that are affected are 12.2.3-12.2.13. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to…