Unauthenticated XML External Entity Injection in AOS-8 Instant allows Denial of Service

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  "cveMetadata": {
    "cveId": "CVE-2026-23822",
    "assignerOrgId": "eb103674-0d28-4225-80f8-39fb86215de0",
    "assignerShortName": "hpe",
    "dateUpdated": "2026-05-12T19:25:55.101Z",
    "dateReserved": "2026-01-16T15:22:49.224Z",
    "datePublished": "2026-05-12T18:37:08.787Z",
    "state": "PUBLISHED"
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      "title": "Unauthenticated XML External Entity Injection in AOS-8 Instant allows Denial of Service",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the XML handling component of AOS-8 DHCP services could allow an unauthenticated remote attacker to trigger a denial-of-service condition. Successful exploitation could allow an attacker to cause excessive resource consumption upon user interaction, leading to service disruption or reduced availability of the affected system.\n\n\n\n\n\n\n\n\nNOTE: This vulnerability only impacts Access Points running AOS Instant 8.x.x.x",
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              "value": "<p>A vulnerability in the XML handling component of AOS-8 DHCP services could allow an unauthenticated remote attacker to trigger a denial-of-service condition. Successful exploitation could allow an attacker to cause excessive resource consumption upon user interaction, leading to service disruption or reduced availability of the affected system.</p><p><br></p><p>NOTE: This vulnerability only impacts Access Points running AOS Instant 8.x.x.x</p>"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Hewlett Packard Enterprise (HPE)",
          "product": "ArubaOS (AOS)",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "8.13.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "8.13.1.1"
            },
            {
              "version": "8.12.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "8.12.0.6"
            },
            {
              "version": "8.10.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "8.10.0.21"
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      "references": [
        {
          "url": "https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05049en_us&docLocale=en_US"
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            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "attackVector": "NETWORK",
            "attackComplexity": "HIGH",
            "privilegesRequired": "NONE",
            "userInteraction": "REQUIRED",
            "scope": "UNCHANGED",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM"
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      "credits": [
        {
          "lang": "en",
          "value": "Nicholas Starke",
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        "title": "CISA ADP Vulnrichment",
        "problemTypes": [
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            "descriptions": [
              {
                "lang": "en",
                "description": "CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')",
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