{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update is now available for Red Hat AMQ Clients\n\nRed Hat Product Security has rated this update as having an impact of\nModerate.\nA Common Vulnerability Scoring System (CVSS) base score, which gives a detailed\nseverity rating, is available for each vulnerability from the CVE link(s) in the\nReferences section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "Each Red Hat AMQ Client enables sending, and receiving messages to or from AMQ Broker 7.\n\nThis update provides various bug fixes and enhancements in addition to the\nclient package versions previously released on Red Hat Enterprise Linux 8\nand 9.\n\nSecurity Fix(es):\n\n* (CVE-2025-58056) netty-codec-http: Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:3102",
        "url": "https://access.redhat.com/errata/RHSA-2026:3102"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#moderate",
        "url": "https://access.redhat.com/security/updates/classification/#moderate"
      },
      {
        "category": "external",
        "summary": "https://docs.redhat.com/en/documentation/red_hat_amq_clients",
        "url": "https://docs.redhat.com/en/documentation/red_hat_amq_clients"
      },
      {
        "category": "external",
        "summary": "2392996",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2392996"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_3102.json"
      }
    ],
    "title": "Red Hat Security Advisory: AMQ Clients 2026.Q1",
    "tracking": {
      "current_release_date": "2026-02-23T18:57:18+00:00",
      "generator": {
        "date": "2026-02-23T18:57:18+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.7.1"
        }
      },
      "id": "RHSA-2026:3102",
      "initial_release_date": "2026-02-23T16:31:20+00:00",
      "revision_history": [
        {
          "date": "2026-02-23T16:31:20+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-02-23T16:31:20+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-02-23T18:57:18+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "AMQ Clients 2026.Q1",
                "product": {
                  "name": "AMQ Clients 2026.Q1",
                  "product_id": "AMQ Clients 2026.Q1",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:amq_clients:2026"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat AMQ Clients"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-58056",
      "cwe": {
        "id": "CWE-444",
        "name": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)"
      },
      "discovery_date": "2025-09-03T21:01:22.935850+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2392996"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw in Netty\u2019s HTTP/1.1 chunked encoding parser allows newline (LF) characters in chunk extensions to be incorrectly treated as the end of the chunk-size line instead of requiring the proper CRLF sequence. This discrepancy can be exploited in rare cases where a reverse proxy interprets the same input differently, potentially enabling HTTP request smuggling attacks such as bypassing access controls or corrupting responses.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-codec-http: Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue is considered Moderate rather than Important because successful exploitation depends on a very specific deployment condition: the presence of an intermediary reverse proxy that both mishandles lone LF characters in chunk extensions and forwards them unmodified to Netty. By itself, Netty\u2019s parsing quirk does not introduce risk, and in most real-world environments, reverse proxies normalize or reject malformed chunked requests, preventing smuggling. As a result, the vulnerability has limited reach, requires a niche configuration to be exploitable, and does not universally expose Netty-based servers to request smuggling\u2014hence it is rated moderate in severity rather than important or critical.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "AMQ Clients 2026.Q1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-58056"
        },
        {
          "category": "external",
          "summary": "RHBZ#2392996",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2392996"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-58056",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-58056"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-58056",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-58056"
        },
        {
          "category": "external",
          "summary": "https://datatracker.ietf.org/doc/html/rfc9112#name-chunked-transfer-coding",
          "url": "https://datatracker.ietf.org/doc/html/rfc9112#name-chunked-transfer-coding"
        },
        {
          "category": "external",
          "summary": "https://github.com/JLLeitschuh/unCVEed/issues/1",
          "url": "https://github.com/JLLeitschuh/unCVEed/issues/1"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/commit/edb55fd8e0a3bcbd85881e423464f585183d1284",
          "url": "https://github.com/netty/netty/commit/edb55fd8e0a3bcbd85881e423464f585183d1284"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/issues/15522",
          "url": "https://github.com/netty/netty/issues/15522"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/pull/15611",
          "url": "https://github.com/netty/netty/pull/15611"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-fghv-69vj-qj49",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-fghv-69vj-qj49"
        },
        {
          "category": "external",
          "summary": "https://w4ke.info/2025/06/18/funky-chunks.html",
          "url": "https://w4ke.info/2025/06/18/funky-chunks.html"
        }
      ],
      "release_date": "2025-09-03T20:56:50.732000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-02-23T16:31:20+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "AMQ Clients 2026.Q1"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:3102"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, enforce strict RFC compliance on all front-end proxies and load balancers so that lone LF characters in chunk extensions are rejected or normalized before being forwarded. Additionally, configure input validation at the application or proxy layer to block malformed chunked requests, ensuring consistent parsing across all components in the request path.",
          "product_ids": [
            "AMQ Clients 2026.Q1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "AMQ Clients 2026.Q1"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "netty-codec-http: Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions"
    }
  ]
}