CVE-2026-73572

Description

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.

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Produits concernés

• Zimbra Collaboration
• Synacor zimbra collaboration suite

Scores CVSS

Faiblesses (CWE)

• CWE-79

Références

• https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy Vendor Advisory
• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories