{
  "document": {
    "aggregate_severity": {
      "text": "Medium"
    },
    "category": "csaf_vex",
    "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"
      }
    ],
    "publisher": {
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      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
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        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/vex/2026/cve-2026-4923-els_os-almalinux9_2esu.json"
      }
    ],
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      "current_release_date": "2026-04-03T16:45:31Z",
      "generator": {
        "date": "2026-04-03T16:45:31Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2026-4923-ELS_OS-ALMALINUX9.2ESU",
      "initial_release_date": "2026-03-26T19:02:00Z",
      "revision_history": [
        {
          "date": "2026-03-26T19:02:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-04-02T09:01:03Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2026-04-03T16:45:31Z",
          "number": "3",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "3"
    },
    "title": "Security update on CVE-2026-4923"
  },
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        "name": "AlmaLinux OS Foundation"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-4923",
      "cwe": {
        "id": "CWE-1333",
        "name": "Inefficient Regular Expression Complexity"
      },
      "notes": [
        {
          "category": "description",
          "text": "Impact:\nWhen using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.\nUnsafe examples:\n/*foo-*bar-:baz\n/*a-:b-*c-:d\n/x/*a-:b/*c/y\nSafe examples:\n/*foo-:bar\n/*foo-:bar-*baz\nPatches:\nUpgrade to version 8.4.0.\nWorkarounds:\nIf you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.",
          "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"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-4923"
        }
      ],
      "release_date": "2026-03-26T19:02:00Z",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        },
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          "category": "impact",
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