CVE-2026-33372

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*", "matchCriteriaId": "E8DBE536-EAB0-48FF-A195-C0DB0A7FBCA0", "versionEndExcluding": "10.1.16", "versionStartIncluding": "10.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulnerability exists in Zimbra Webmail due to improper validation of CSRF tokens. The application accepts CSRF tokens supplied within the request body instead of requiring them through the expected request header. An attacker can exploit this issue by tricking an authenticated user into submitting a crafted request. This may allow unauthorized actions to be performed on behalf of the victim."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en Zimbra Collaboration (ZCS) 10.0 y 10.1. Existe una vulnerabilidad de falsificaci\u00f3n de petici\u00f3n en sitios cruzados (CSRF) en Zimbra Webmail debido a una validaci\u00f3n incorrecta de los tokens CSRF. La aplicaci\u00f3n acepta tokens CSRF suministrados dentro del cuerpo de la petici\u00f3n en lugar de requerirlos a trav\u00e9s de la cabecera de petici\u00f3n esperada. Un atacante puede explotar este problema enga\u00f1ando a un usuario autenticado para que env\u00ede una petici\u00f3n manipulada. Esto puede permitir que se realicen acciones no autorizadas en nombre de la v\u00edctima."}], "id": "CVE-2026-33372", "lastModified": "2026-06-17T10:37:23.570", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33372", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-23T13:40:32.695928Z", "version": "2.0.3"}}]}, "published": "2026-03-20T14:16:16.357", "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/10.1.16#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"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-352"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "10.1"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "collaboration", "vendor": "zimbra"}], "analysis": {"en": {"generated_at": "2026-04-02T04:18:42.932519+00:00", "value": {"mitigation_remediation": ["Verify that your Zimbra Collaboration Suite installation is on version 10.0 or 10.1 and plan an upgrade.", "Apply the Zimbra 10.1.16 security update, which enforces proper CSRF token validation.", "Test the patch by ensuring that CSRF tokens supplied in the request body are no longer accepted.", "Monitor application logs for unexpected actions performed by authenticated users and enable Security Center alerts for suspicious activity."], "summary": {"action": "Patch", "impact": "Unauthorized actions via CSRF"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Zimbra Collaboration Suite versions 10.0 and 10.1. Administrators overseeing these deployments should confirm whether they run those versions. The issue was addressed in the 10.1.16 release notes.", "description_and_impact": "The flaw lies in the Zimbra Webmail application, which accepts CSRF tokens from the request body rather than enforcing the expected header. This incorrect validation allows a malicious site to instruct an authenticated user to perform unwanted operations, potentially resulting in data changes or account manipulation performed under the victim\u2019s identity.", "risk_and_exploitability": "The vulnerability carries a CVSS score of 5.4, denoting moderate risk, and an EPSS score of less than 1%, indicating a low likelihood of exploitation. It is not listed in the CISA KEV catalog. Exploitation requires a tricked, authenticated user to submit a crafted request, so the threat depends on user interaction and the presence of the vulnerable application."}}}}, "created": "2026-03-23T09:53:35.263578+00:00", "updated": "2026-04-02T07:59:38.725514+00:00", "vendors": ["zimbra", "zimbra$PRODUCT$collaboration"]}