What is CVE-2023-50808?

CVE-2023-50808 is a medium-severity vulnerability in Zimbra Collaboration, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-02-13.

How severe is CVE-2023-50808?

Medium severity. CVSS v3 base score is 6.1 out of 10.

RCE in Zimbra Collaboration

CVE-2023-50808

Zimbra Collaboration before Kepler 9.0.0 Patch 38 GA allows DOM-based JavaScript injection in the Modern UI.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-02-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Zimbra Collaboration — versions 9.0.0

Weakness classification (CWE)

References

wiki.zimbra.com/wiki/Zimbra_Security_Advisories (Vendor Advisory)
wiki.zimbra.com/wiki/Security_Center (Release Notes)
wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P38 (Release Notes)

Frequently asked questions

What is CVE-2023-50808?: CVE-2023-50808 is a medium-severity vulnerability in Zimbra Collaboration, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-02-13.
How severe is CVE-2023-50808?: Medium severity. CVSS v3 base score is 6.1 out of 10.