CVE-2026-33372

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Summary

CVECVE-2026-33372
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-20 14:16:16 UTC
Updated2026-04-01 15:32:50 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS: 0.000250000 probability, percentile 0.066120000 (date 2026-04-01)

Problem Types: CWE-352 | n/a | CWE-352 CWE-352 Cross-Site Request Forgery (CSRF)

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Synacor Zimbra Collaboration Suite All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy [email protected] wiki.zimbra.com Product
wiki.zimbra.com/wiki/Zimbra_Releases/10.1.16 [email protected] wiki.zimbra.com Release Notes
wiki.zimbra.com/wiki/Security_Center [email protected] wiki.zimbra.com Vendor Advisory, Release Notes
wiki.zimbra.com/wiki/Zimbra_Security_Advisories [email protected] wiki.zimbra.com Vendor Advisory
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