CVE-2025-48700

6.1

CVSS
Medium

PUBLISHED

An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra...

1 day faster than CISA KEV

Exploited in the wild Remote Low complexity

Vendor: Zimbra
Product: Zimbra Collaboration (ZCS)
Published: Jun 23, 2025
EPSS: 18.2% · 95% pctl

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Description

An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information. This issue arises from insufficient sanitization of HTML content, specifically involving crafted tag structures and attribute values that include an @import directive and other script injection vectors. The vulnerability is triggered when a user views a crafted e-mail message in the Classic UI, requiring no additional user interaction.

cisa

Weaknesses (CWE)

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores

CVSS v3.1 6.1 Medium

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

Exploitation status

Exploited in the wild

Recorded 2026-06-01 13:22:22 UTC · CVE

References

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source	Added
CVE First	2026-06-01 13:22 UTC
CISA	2026-06-02 14:01 UTC

Vulnerability detail