Webmail — security advisory

{
  "id": "6537439e5098cf54683e2389c011a747ef7ac7bd66193323cd89e41ab0bce038",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-114717",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-114717",
    "summary": "Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability when a message is forwarded as an attachment. The subject of the forwarded message was used verbatim to generate the attachment name, so a received message whose subject contains CRLF sequences could inject arbitrary MIME part headers into the outgoing message. Upstream fixed this in the commit “Fix mail header injection via subject of a message forwarded as attachment”, which collapses whitespace in the generated name.",
    "evidence": "cve:CVE-2026-114717",
    "products": [
      {
        "name": {
          "value": "Webmail",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-114717",
      "aliases": [
        "CVE-2026-114717"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "CHANGED",
            "version": "3.1",
            "baseScore": 4,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "integrityImpact": "LOW",
            "userInteraction": "NONE",
            "attackComplexity": "HIGH",
            "availabilityImpact": "NONE",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/roundcube/roundcubemail/",
          "vendor": "Roundcube",
          "product": "Webmail",
          "versions": [
            {
              "status": "affected",
              "version": "1.6.0",
              "lessThan": "1.6.20",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "1.7.0",
              "lessThan": "1.7.5",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T19:39:43.919Z",
      "provider": "cve",
      "references": [
        "https://bugs.debian.org/1151279",
        "https://github.com/roundcube/roundcubemail/commit/4c3291ce9df9e1d3b45330d0854d65cd8efbeee9",
        "https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.7.5",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.6.20",
        "https://github.com/roundcube/roundcubemail/commit/c325953a251d0132f1909569b3eac0b974095dd4"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-114717",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T19:16:26.346517Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T19:39:43.919Z"
            }
          }
        ],
        "cna": {
          "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
          "shortName": "mitre",
          "dateUpdated": "2026-10-22T01:21:14.794Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-114717",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 338238,
  "published_at": "2026-10-22T01:21:14.794+00:00"
}