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  "document": {
    "aggregate_severity": {
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "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 Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "* SECURITY UPDATE: uncontrolled recursion in SGML catalog parsing\n     - debian/patches/CVE-2025-8732.patch: thread a depth counter through\n       xmlParseSGMLCatalog() and xmlExpandCatalog() in catalog.c and bail out\n       past MAX_CATAL_DEPTH, and register expanded catalog filenames in the\n       SGML hash table before recursing so a repeated CATALOG directive is\n       only followed once, to prevent stack exhaustion and exponential\n       re-parsing on self-referencing SGML CATALOG entries. Add test files\n       result/catalogs/recursive, test/catalogs/recursive.script and\n       test/catalogs/recursive.sgml\n     - CVE-2025-8732\n   * SECURITY UPDATE: uncontrolled recursion in the RelaxNG parser via nested\n     schema includes\n     - debian/patches/CVE-2026-0989.patch: add an include depth limit to the\n       RelaxNG parser context in relaxng.c, defaulting to 1000 and overridable\n       via the RNG_INCLUDE_LIMIT environment variable or the new\n       xmlRelaxParserSetIncLImit() entry point in include/libxml/relaxng.h, and\n       make xmlRelaxNGIncludePush() failures propagate. Add coverage in\n       runtest.c and test/relaxng/include/include-limit*.rng\n     - debian/libxml2.symbols: add the new xmlRelaxParserSetIncLImit symbol\n     - CVE-2026-0989\n   * SECURITY UPDATE: uncontrolled recursion in XML catalog URI resolution\n     - debian/patches/CVE-2026-0990.patch: add a MAX_CATAL_DEPTH guard to\n       xmlCatalogListXMLResolveURI() in catalog.c and stop clobbering the\n       catalog entry used for depth bookkeeping while walking the entry list,\n       to prevent stack exhaustion on a self-referencing delegateURI entry\n     - CVE-2026-0990\n   * SECURITY UPDATE: uncontrolled resource consumption via repeated\n     nextCatalog entries\n     - debian/patches/CVE-2026-0992.patch: ignore duplicate nextCatalog\n       entries in xmlParseXMLCatalogNode() in catalog.c, to prevent redundant\n       exponential traversal of catalog chains. Guard the new loop against a\n       NULL entry so a nextCatalog element without a 'catalog' attribute is\n       still skipped with an error instead of crashing\n     - CVE-2026-0992",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1787063229",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1787063229"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian10els/advisories/2026/clsa-2026_1787063229.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-08-18T14:28:03Z",
      "generator": {
        "date": "2026-08-18T14:28:03Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1787063229",
      "initial_release_date": "2026-08-18T14:28:03Z",
      "revision_history": [
        {
          "date": "2026-08-18T14:28:03Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "Fix CVE(s): CVE-2025-8732, CVE-2026-0989, CVE-2026-0990, CVE-2026-0992"
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          "title": "Vulnerability description"
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        "id": "CWE-400",
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          "category": "description",
          "text": "A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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        {
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          "title": "Vulnerability description"
        },
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        }
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      "threats": [
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          "category": "impact",
          "details": "Low"
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      ]
    },
    {
      "cve": "CVE-2025-8732",
      "cwe": {
        "id": "CWE-404",
        "name": "Improper Resource Shutdown or Release"
      },
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was found in libxml2 up to 2.14.5. It has been declared as problematic. This vulnerability affects the function xmlParseSGMLCatalog of the component xmlcatalog. The manipulation leads to uncontrolled recursion. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains, that \"[t]he issue can only be triggered with untrusted SGML catalogs and it makes absolutely no sense to use untrusted catalogs. I also doubt that anyone is still using SGML catalogs at all.\"",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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        ],
        "known_affected": [
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2025-8732"
        },
        {
          "category": "external",
          "summary": "https://drive.google.com/file/d/1woIeYVcSQB_NwfEhaVnX6MedpWJ_nqWl/view?usp=drive_link",
          "url": "https://drive.google.com/file/d/1woIeYVcSQB_NwfEhaVnX6MedpWJ_nqWl/view?usp=drive_link"
        },
        {
          "category": "external",
          "summary": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/958",
          "url": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/958"
        },
        {
          "category": "external",
          "summary": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/958#note_2505853",
          "url": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/958#note_2505853"
        },
        {
          "category": "external",
          "summary": "https://vuldb.com/?ctiid.319228",
          "url": "https://vuldb.com/?ctiid.319228"
        },
        {
          "category": "external",
          "summary": "https://vuldb.com/?id.319228",
          "url": "https://vuldb.com/?id.319228"
        },
        {
          "category": "external",
          "summary": "https://vuldb.com/?submit.622285",
          "url": "https://vuldb.com/?submit.622285"
        },
        {
          "category": "external",
          "summary": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html",
          "url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html"
        }
      ],
      "release_date": "2025-08-08T17:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-18T14:27:11.574570Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1787063229",
          "product_ids": [
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            "Debian-10:python3-libxml2-0:2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els7.amd64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1787063229"
        },
        {
          "category": "none_available",
          "date": "2025-08-08T17:15:00Z",
          "details": "Affected",
          "product_ids": [
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
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}