CVE-2025-48700

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory zimbra.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories vendor advisory
https://wiki.zimbra.com/wiki/Security_Center release notes
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy product

Frequently Asked Questions

What is the severity of CVE-2025-48700?
CVE-2025-48700 has been scored as a medium severity vulnerability.
How to fix CVE-2025-48700?
To fix CVE-2025-48700, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-48700 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-48700 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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