CVE-2025-66376

HIGH KEV

Zimbra Collaboration <10.0.18, <10.1.13 - XSS

Title source: llm

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.

References (5)

Scores

CVSS v3 7.2
EPSS 0.0005
EPSS Percentile 14.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Exploitation Intel

CISA KEV 2026-03-18
VulnCheck KEV 2026-03-17

Classification

CWE
CWE-79
Status published

Affected Products (2)

Zimbra/Collaboration < 10.0.18
Zimbra/Collaboration < 10.1.13

Timeline

Published Jan 05, 2026
KEV Added Mar 18, 2026
Tracked Since Feb 18, 2026