Name: CVE-2025-66376: Improper Neutralization of Input During Web Page Generation
Creator: Rapid7
Published: 2026-01-05T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2025-66376, CWE-79, Exploited in the Wild, CISA KEV Exploit, CVSS 6.1, EPSS 0.20227, CISA KEV

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.

CVSS Details

CVSS 3.1 Base Score: 6.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Zimbra Collaboration	—	Upgrade Zimbra Collaboration to the latest version	Jan 6, 2026	Jan 5, 2026

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CVSS Details

Covered by Rapid7

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