RHSA-2026:1935

Vulnerability from csaf_redhat - Published: 2026-02-04 14:34 - Updated: 2026-02-04 18:56
Summary
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.4 XP 6.0.2.GA release

Notes

Topic
JBoss EAP XP 6.0.2.GA release on the EAP 8.1 base. See references for release notes.
Details
This is a cumulative patch release zip for the JBoss EAP XP 6.0.2 runtime distribution for use with EAP 8.1.4. Security Fix(es): * lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing (CVE-2025-66566) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
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.
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    "notes": [
      {
        "category": "summary",
        "text": "JBoss EAP XP 6.0.2.GA release on the EAP 8.1 base. See references for release notes.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "This is a cumulative patch release zip for the JBoss EAP XP 6.0.2 runtime distribution for use with EAP 8.1.4.\n\nSecurity Fix(es):\n\n* lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing (CVE-2025-66566)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
        "title": "Details"
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        "summary": "https://access.redhat.com/errata/RHSA-2026:1935",
        "url": "https://access.redhat.com/errata/RHSA-2026:1935"
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        "url": "https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1/html/red_hat_jboss_eap_xp_6.0_release_notes/index"
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        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_1935.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.4 XP 6.0.2.GA release",
    "tracking": {
      "current_release_date": "2026-02-04T18:56:12+00:00",
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      "id": "RHSA-2026:1935",
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      "revision_history": [
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          "date": "2026-02-04T14:34:28+00:00",
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      "cve": "CVE-2025-66566",
      "cwe": {
        "id": "CWE-908",
        "name": "Use of Uninitialized Resource"
      },
      "discovery_date": "2025-12-05T19:00:50.134024+00:00",
      "ids": [
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          "text": "2419500"
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          "category": "description",
          "text": "A flaw was found in lz4-java. This vulnerability allows disclosure of sensitive data via crafted compressed input due to insufficient clearing of the output buffer in Java-based decompressor implementations.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated IMPORTANT because it allows for information disclosure when Java-based decompressor implementations reuse output buffers without proper clearing, potentially exposing sensitive data via crafted compressed input. JNI-based implementations of lz4-java are not affected by this issue.",
          "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": [
          "Red Hat JBoss EAP XP 6.0 Update 2.0"
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          "url": "https://access.redhat.com/security/cve/CVE-2025-66566"
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          "category": "external",
          "summary": "RHBZ#2419500",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2419500"
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-66566",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-66566"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-66566",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66566"
        },
        {
          "category": "external",
          "summary": "https://github.com/yawkat/lz4-java/commit/33d180cb70c4d93c80fb0dc3ab3002f457e93840",
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        {
          "category": "external",
          "summary": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-cmp6-m4wj-q63q",
          "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-cmp6-m4wj-q63q"
        }
      ],
      "release_date": "2025-12-05T18:10:16.470000+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2026-02-04T14:34:28+00:00",
          "details": "Before applying the update, make sure all previously released errata relevant to your system have been applied. Also, back up your existing installation, including all applications, configuration files, databases and database settings. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258",
          "product_ids": [
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          "restart_required": {
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        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat JBoss EAP XP 6.0 Update 2.0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.