{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2024-42009",
  "revision": 1,
  "title": "Roundcube Webmail — message body injection steals mail",
  "summary": "Roundcube through 1.5.7 and 1.6.7 undoes its own sanitising when it renders a message body, so opening a crafted e-mail runs the sender's script and lets them read and send mail as the victim.",
  "source_type": "cve",
  "severity": "critical",
  "cvss": {
    "score": 9.3,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
    "version": "3.1"
  },
  "epss": 0.82882,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "low",
    "kev_added": "2025-06-09",
    "prerequisites": "The victim must open the crafted message in Roundcube."
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "Roundcube Webmail 1.5.8",
      "Roundcube Webmail 1.6.8"
    ]
  },
  "mitre_attack": [
    "T1059.007"
  ],
  "kill_chain": "execution",
  "recommended_action": "Upgrade Roundcube to 1.5.8 or 1.6.8 now; review mailbox forwarding rules and sent items for messages nobody in the organisation wrote.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2024-42009",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2024-42009",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2024-42009",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42009",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8"
    },
    {
      "type": "writeup",
      "url": "https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/"
    }
  ],
  "published_at": "2024-08-05T19:15:38.220Z",
  "issued_at": "2026-09-24T12:03:01.274Z",
  "tags": [
    "roundcube",
    "webmail",
    "cross-site-scripting",
    "kev"
  ]
}