CVE-2025-67735

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{"bugzilla": {"description": "netty-codec-http: Netty (netty-codec-http): Request Smuggling via CRLF Injection", "id": "2422568", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422568"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-93", "details": ["Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when `HttpRequestEncoder` is used without proper sanitization of the URI. Any application / framework using `HttpRequestEncoder` can be subject to be abused to perform request smuggling using CRLF injection. Versions 4.1.129.Final and 4.2.8.Final fix the issue.", "A flaw was found in Netty (netty-codec-http). This vulnerability allows request smuggling via CRLF (Carriage Return Line Feed) injection with the request URI when constructing a request."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2025-67735", "package_state": [{"cpe": "cpe:/a:redhat:amq_clients:2023", "fix_state": "Fix deferred", "package_name": "netty-codec-http", "product_name": "AMQ Clients"}, {"cpe": "cpe:/a:redhat:amq_clients:2023", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": "AMQ Clients"}, {"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "netty-codec-http", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": 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"cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "netty-codec-http", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:amq_streams:2", "fix_state": "Fix deferred", "package_name": "netty-codec-http", "product_name": "streams for Apache Kafka 2"}, {"cpe": "cpe:/a:redhat:amq_streams:2", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": "streams for Apache Kafka 2"}, {"cpe": "cpe:/a:redhat:amq_streams:3", "fix_state": "Fix deferred", "package_name": "netty-codec-http", "product_name": "streams for Apache Kafka 3"}, {"cpe": "cpe:/a:redhat:amq_streams:3", "fix_state": "Fix deferred", "package_name": "netty-codec-http2", "product_name": "streams for Apache Kafka 3"}], "public_date": "2025-12-16T00:19:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-67735\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-67735\nhttps://github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4"], "statement": "This vulnerability is rated Moderate for Red Hat products. A CRLF injection flaw exists in the `io.netty.handler.codec.http.HttpRequestEncoder` component of Netty. This can lead to request smuggling if applications using `HttpRequestEncoder` do not properly sanitize the request URI, allowing an attacker to inject malicious headers.", "threat_severity": "Moderate"}

{"created": "2025-12-16T17:09:37.839884+00:00", "updated": "2025-12-16T17:09:37.839910+00:00", "vendors": ["netty", "netty$PRODUCT$netty"]}