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CVE-2022-28366

Status: ModifiedHigh (7.5)—

Certain Neko-related HTML parsers allow a denial of service via crafted Processing Instruction (PI) input that causes excessive heap memory consumption. In particular, this issue exists in HtmlUnit-Neko through 2.26, and is fixed in 2.27. This issue also exists in CyberNeko HTML through 1.9.22 (also affecting OWASP AntiSamy before 1.6.6), but 1.9.22 is the last version of CyberNeko HTML. NOTE: this may be related to CVE-2022-24839.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Antisamy Project — AntisamyCyberneko Html Project — Cyberneko HtmlHtmlunit — Htmlunit

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2022-28366",
  "cveTags": [],
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
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        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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  "published": "2022-04-21T23:15:10.383",
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  "weaknesses": [
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      "value": "Certain Neko-related HTML parsers allow a denial of service via crafted Processing Instruction (PI) input that causes excessive heap memory consumption. In particular, this issue exists in HtmlUnit-Neko through 2.26, and is fixed in 2.27. This issue also exists in CyberNeko HTML through 1.9.22 (also affecting OWASP AntiSamy before 1.6.6), but 1.9.22 is the last version of CyberNeko HTML. NOTE: this may be related to CVE-2022-24839."
    },
    {
      "lang": "es",
      "value": "Algunos analizadores de HTML relacionados con Neko permiten una denegación de servicio a través de una entrada de instrucción de procesamiento (PI) manipulada que provoca un consumo excesivo de memoria de la pila. En particular, este problema existe en HtmlUnit-Neko hasta la versión 2.26, y se ha corregido en la 2.27. Este problema también existe en CyberNeko HTML hasta la versión 1.9.22 (también afecta a OWASP AntiSamy antes de la 1.6.6), pero la 1.9.22 es la última versión de CyberNeko HTML. NOTA: esto puede estar relacionado con CVE-2022-24839"
    }
  ],
  "lastModified": "2026-06-17T04:38:26.287",
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