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CVE-2026-33371 Detail

Description

An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. An XML External Entity (XXE) vulnerability exists in the Zimbra Exchange Web Services (EWS) SOAP interface due to improper handling of XML input. An authenticated attacker can submit crafted XML data that is processed by an XML parser with external entity resolution enabled. Successful exploitation may allow disclosure of sensitive local files from the server.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://wiki.zimbra.com/wiki/Security_Center MITRE
https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.16#Security_Fixes MITRE
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy MITRE
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories MITRE

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-33371
NVD Published Date:
03/20/2026
NVD Last Modified:
03/20/2026
Source:
MITRE