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CVE-2026-34799

Status: AnalyzedMedium (5.1)—

Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the remark parameter to /manage/dnsmasq/hosts/. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page.

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 (1)

Endian — Firewall Community

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-34799",
  "cveTags": [],
  "metrics": {
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          "options": [
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-04-02T16:17:40.443541Z"
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          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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  "affected": [
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      "affectedData": [
        {
          "vendor": "Endian",
          "product": "Endian Firewall",
          "versions": [
            {
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              "version": "3.3.25",
              "versionType": "semver"
            }
          ],
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  ],
  "published": "2026-04-02T15:16:46.060",
  "references": [
    {
      "url": "https://help.endian.com/hc/en-us/sections/360004371358-Community",
      "tags": [
        "Release Notes"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/endian-firewall-manage-dnsmasq-hosts-remark-stored-cross-site-scripting",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the remark parameter to /manage/dnsmasq/hosts/. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page."
    },
    {
      "lang": "es",
      "value": "Endian cortafuegos versión 3.3.25 y anteriores permiten cross-site scripting (XSS) almacenado a través del parámetro remark a /manage/dnsmasq/hosts/. Un atacante autenticado puede inyectar JavaScript arbitrario que se almacena y ejecuta cuando otros usuarios ven la página afectada."
    }
  ],
  "lastModified": "2026-07-24T21:10:00.143",
  "configurations": [
    {
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              "versionEndIncluding": "3.3.25"
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        }
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  "sourceIdentifier": "disclosure@vulncheck.com"
}