FKIE_CVE-2026-114730

Vulnerability from fkie_nvd - Published: 2026-10-22 03:16 - Updated: 2026-10-22 16:45
Severity
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Summary
Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 is affected by a server-side request forgery filter bypass. The network blocklist used by rcube_utils::is_local_url() omitted the RFC 6052 NAT64 prefix 64:ff9b::/96, the RFC 8215 local-use NAT64 prefix 64:ff9b:1::/48 and the unspecified address ::/128, so URLs such as http://[64:ff9b::7f00:1]/ passed the filter and reached loopback, link-local and cloud metadata addresses. Upstream fixed this in the commit “Fix SSRF filter (is_local_url()) bypass via NAT64 64:ff9b::/96”.
References
cve@mitre.orghttps://bugs.debian.org/1151279
cve@mitre.orghttps://github.com/roundcube/roundcubemail/commit/3c3a65f66b53b7aaf3d720acd06e0b102eceb090
cve@mitre.orghttps://github.com/roundcube/roundcubemail/commit/6e1d480e730a45f29829b6a11af608d5d6eb3db6
cve@mitre.orghttps://github.com/roundcube/roundcubemail/releases/tag/1.6.20
cve@mitre.orghttps://github.com/roundcube/roundcubemail/releases/tag/1.7.5
cve@mitre.orghttps://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Webmail",
          "repo": "https://github.com/roundcube/roundcubemail/",
          "vendor": "Roundcube",
          "versions": [
            {
              "lessThan": "1.6.20",
              "status": "affected",
              "version": "1.6.14",
              "versionType": "semver"
            },
            {
              "lessThan": "1.7.5",
              "status": "affected",
              "version": "1.7.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 is affected by a server-side request forgery filter bypass. The network blocklist used by rcube_utils::is_local_url() omitted the RFC 6052 NAT64 prefix 64:ff9b::/96, the RFC 8215 local-use NAT64 prefix 64:ff9b:1::/48 and the unspecified address ::/128, so URLs such as http://[64:ff9b::7f00:1]/ passed the filter and reached loopback, link-local and cloud metadata addresses. Upstream fixed this in the commit \u201cFix SSRF filter (is_local_url()) bypass via NAT64 64:ff9b::/96\u201d."
    }
  ],
  "id": "CVE-2026-114730",
  "lastModified": "2026-10-22T16:45:49.550",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-22T03:16:38.217",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://bugs.debian.org/1151279"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/roundcube/roundcubemail/commit/3c3a65f66b53b7aaf3d720acd06e0b102eceb090"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/roundcube/roundcubemail/commit/6e1d480e730a45f29829b6a11af608d5d6eb3db6"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Primary"
    }
  ]
}



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