{
  "id": "cve-2024-27443",
  "cveID": "CVE-2024-27443",
  "vendor": "Synacor",
  "product": "Zimbra Collaboration Suite (ZCS)",
  "vulnerabilityName": "Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability",
  "shortDescription": "Zimbra Collaboration contains a cross-site scripting (XSS) vulnerability in the CalendarInvite feature of the Zimbra webmail classic user interface. An attacker can exploit this vulnerability via an email message containing a crafted calendar header, leading to the execution of arbitrary JavaScript code.",
  "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "dateAdded": "2025-05-19",
  "dueDate": "2025-06-09",
  "knownRansomware": false,
  "cwes": [
    "CWE-79"
  ],
  "notes": "https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P46#Security_Fixes ; https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P39#Security_Fixes ; https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.7#Security_Fixes ; https://nvd.nist.gov/vuln/detail/CVE-2024-27443",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27443"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "wiki.zimbra.com",
      "url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P46#Security_Fixes"
    },
    {
      "label": "wiki.zimbra.com",
      "url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P39#Security_Fixes"
    },
    {
      "label": "wiki.zimbra.com",
      "url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.7#Security_Fixes"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27443"
    }
  ],
  "cvss": {
    "score": 6.1,
    "severity": "MEDIUM",
    "version": "3.1",
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  },
  "epss": {
    "score": 0.23632,
    "percentile": 0.97664
  },
  "timeline": [
    {
      "date": "2025-05-19",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2025-06-09",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}