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    "cveMetadata": {
        "cveId": "CVE-2026-93641",
        "assignerOrgId": "9974b330-7714-4307-a722-5648477acda7",
        "state": "PUBLISHED",
        "assignerShortName": "rapid7",
        "dateReserved": "2026-09-18T12:22:38.559Z",
        "datePublished": "2026-09-25T13:55:10.616Z",
        "dateUpdated": "2026-09-25T16:11:43.921Z"
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                "shortName": "rapid7",
                "dateUpdated": "2026-09-25T13:55:10.616Z"
            },
            "title": "Zimbra Collaboration Suite Classic Web Client Stored Cross-Site Scripting via Forged Share Invitation",
            "datePublic": "2026-09-25T13:52:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-79",
                            "description": "CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Zimbra",
                    "product": "Zimbra Collaboration Suite (ZCS)",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "10.1.21",
                            "versionType": "semver"
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                    ],
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            "descriptions": [
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                    "lang": "en",
                    "value": "An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Classic recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.",
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                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<div><span>An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Classic recipient clicks </span><b>Accept Share</b><span>, allowing the attacker to access mailbox data and act as the victim.</span></div>"
                        }
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                }
            ],
            "references": [
                {
                    "url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
            ],
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                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "REQUIRED",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.3,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N"
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            "credits": [
                {
                    "lang": "en",
                    "value": "Jonah Burgess (CryptoCat), Senior Security Researcher, Rapid7",
                    "type": "finder"
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            "source": {
                "discovery": "UNKNOWN"
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            {
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-25T16:11:26.334455Z",
                                "id": "CVE-2026-93641",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "no"
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                                        "Technical Impact": "total"
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                                "role": "CISA Coordinator",
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                "title": "CISA ADP Vulnrichment",
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