Unrated severityCISA KEVOSV Advisory· Published Jan 5, 2026· Updated Mar 19, 2026

CVE-2025-66376

Description

Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message.

Affected products

Zimbra/Zm BuildOSV
Range: 10.0.0-GA, 10.0.1, 10.0.13, …

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

wiki.zimbra.com/wiki/Security_Centermitre
wiki.zimbra.com/wiki/Zimbra_Releases/10.0.18mitre
wiki.zimbra.com/wiki/Zimbra_Releases/10.1.13mitre
wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policymitre
wiki.zimbra.com/wiki/Zimbra_Security_Advisoriesmitre

News mentions

No linked articles in our index yet.

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epss	0.009
exploit	0.000
kev	0.120
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ransomware	0.000