CVE-2025-27914

Description

An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A Reflected Cross-Site Scripting (XSS) vulnerability exists in the /h/rest endpoint, allowing authenticated attackers to inject and execute arbitrary JavaScript in a victim's session. Exploitation requires a valid auth token and involves a crafted URL with manipulated query parameters that triggers XSS when accessed by a victim.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy technical description
https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.11#Security_Fixes release notes

Frequently Asked Questions

What is the severity of CVE-2025-27914?
CVE-2025-27914 has been scored as a medium severity vulnerability.
How to fix CVE-2025-27914?
To fix CVE-2025-27914, 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-2025-27914 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-27914 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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