CVE-2026-73572: XSS
In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-73572?
CVE-2026-73572 has a medium severity rating of 6.1.
How do I fix CVE-2026-73572?
To address CVE-2026-73572, upgrade Zimbra Collaboration (ZCS) to version 10.1.17 or later.
What type of vulnerability is CVE-2026-73572?
CVE-2026-73572 is a stored cross-site scripting (XSS) vulnerability.
What impact does CVE-2026-73572 have?
CVE-2026-73572 allows an attacker to execute arbitrary scripts in the context of a user's browser.
In which version of Zimbra is CVE-2026-73572 found?
CVE-2026-73572 is found in Zimbra Collaboration (ZCS) versions prior to 10.1.17.