cybersecuritypatch managementXSS vulnerabilityZimbraemail security
Zimbra urges customers to patch critical web client XSS flaw
July 9, 2026
Back to all postsZimbra, an email and collaboration software provider, has recently advised its customers to urgently apply patches for a critical Cross-Site Scripting (XSS) vulnerability discovered in their Zimbra Web Client. The XSS flaw, tracked as CVE-2021-35704, can potentially allow attackers to inject malicious scripts into web pages viewed by other users, posing serious security risks such as account takeover, data theft, and phishing attacks. This vulnerability affects various versions of Zimbra Collaboration Suite (ZCS) released since 2018, impacting numerous Canadian businesses using the software. To mitigate this risk, Zimbra recommends installing the latest patch available for their respective versions of ZCS as soon as possible.
Source: BleepingComputer
cybersecuritypatch managementXSS vulnerabilityZimbraemail security
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