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Vulnerability record · CVE-2023-34193 · published 6 July 2023

CVE-2023-34193: Zimbra collaboration unrestricted file upload vulnerability

Zimbra · Collaboration

File Upload vulnerability in Zimbra ZCS 8.8.15 allows an authenticated privileged user to execute arbitrary code and obtain sensitive information via the ClientUploader function.

8.8 CVSS 3.1 High EPSS 1.2% · top 33.9% CWE-434 · Unrestricted file upload
8.8CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

File Upload vulnerability in Zimbra ZCS 8.8.15 allows an authenticated privileged user to execute arbitrary code and obtain sensitive information via the ClientUploader function.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://wiki.zimbra.com/wiki/Security_Center Release NotesVendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy Not Applicable
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
https://wiki.zimbra.com/wiki/Security_Center Release NotesVendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy Not Applicable
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-34193), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.