CVE-2025-66376

{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2025-66376", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-03-19T03:55:17.926Z", "dateReserved": "2025-11-28T00:00:00.000Z", "datePublished": "2026-01-05T00:00:00.000Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Collaboration", "vendor": "Zimbra", "versions": [{"lessThan": "10.0.18", "status": "affected", "version": "10.0", "versionType": "custom"}, {"lessThan": "10.1.13", "status": "affected", "version": "10.1", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-01-05T14:49:53.107Z"}, "references": [{"url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"}, {"url": "https://wiki.zimbra.com/wiki/Security_Center"}, {"url": "https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy"}, {"url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.13#Security_Fixes"}, {"url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.18#Security_Fixes"}], "x_generator": {"engine": "enrichogram 0.0.1"}, "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.2, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"}}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0", "versionEndExcluding": "10.0.18"}, {"vulnerable": true, "criteria": "cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.1", "versionEndExcluding": "10.1.13"}]}]}]}, "adp": [{"references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-66376", "tags": ["government-resource"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-17T00:00:00+00:00", "options": [{"Exploitation": "active"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2025-66376"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2026-03-18", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-66376"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-19T03:55:17.926Z"}, "timeline": [{"time": "2026-03-18T00:00:00.000Z", "lang": "en", "value": "CVE-2025-66376 added to CISA KEV"}]}]}, "dataVersion": "5.2"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-66376", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-18T16:58:05.651376Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2026-03-18", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-66376"}}}], "references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-66376", "tags": ["government-resource"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-05T20:42:37.847Z"}, "timeline": [{"lang": "en", "time": "2026-03-18T00:00:00.000Z", "value": "CVE-2025-66376 added to CISA KEV"}]}], "cna": {"metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.2, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"}}], "affected": [{"vendor": "Zimbra", "product": "Collaboration", "versions": [{"status": "affected", "version": "10.0", "lessThan": "10.0.18", "versionType": "custom"}, {"status": "affected", "version": "10.1", "lessThan": "10.1.13", "versionType": "custom"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"}, {"url": "https://wiki.zimbra.com/wiki/Security_Center"}, {"url": "https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy"}, {"url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.13#Security_Fixes"}, {"url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.18#Security_Fixes"}], "x_generator": {"engine": "enrichogram 0.0.1"}, "descriptions": [{"lang": "en", "value": "Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.18", "versionStartIncluding": "10.0"}, {"criteria": "cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.1.13", "versionStartIncluding": "10.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-01-05T14:49:53.107Z"}}}, "cveMetadata": {"cveId": "CVE-2025-66376", "state": "PUBLISHED", "dateUpdated": "2026-03-19T03:55:17.926Z", "dateReserved": "2025-11-28T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2026-01-05T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Collaboration", "vendor": "Zimbra", "versions": [{"lessThan": "10.0.18", "status": "affected", "version": "10.0", "versionType": "custom"}, {"lessThan": "10.1.13", "status": "affected", "version": "10.1", "versionType": "custom"}]}], "source": "cve@mitre.org"}], "cisaActionDue": "2026-04-01", "cisaExploitAdd": "2026-03-18", "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.", "cisaVulnerabilityName": "Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*", "matchCriteriaId": "7D423DB3-FCD4-445F-A778-BC5F83E01953", "versionEndExcluding": "10.0.18", "versionStartIncluding": "10.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*", "matchCriteriaId": "7C3F6B1E-1671-461B-A093-7B6854C227FE", "versionEndExcluding": "10.1.13", "versionStartIncluding": "10.1.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message."}, {"lang": "es", "value": "Zimbra Collaboration (ZCS) 10 anterior a 10.0.18 y 10.1 anterior a 10.1.13 permite XSS almacenado en la interfaz de usuario cl\u00e1sica a trav\u00e9s de directivas @import de Hojas de Estilo en Cascada (CSS) en un mensaje de correo electr\u00f3nico HTML."}], "id": "CVE-2025-66376", "lastModified": "2026-10-07T10:10:00.213", "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"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-66376", "options": [{"exploitation": "active"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-17T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-01-05T15:15:44.903", "references": [{"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://wiki.zimbra.com/wiki/Security_Center"}, {"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.18#Security_Fixes"}, {"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.13#Security_Fixes"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-66376"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "cve@mitre.org", "type": "Secondary"}]}

{}

{}