Live › vulnerability › CVE-2026-10632
Go to dashboardThe Classic Web Client of Zimbra Collaboration Suite does not HTML-encode the packages parameter of the /h/rest document editor, so injected JavaScript runs in a victim's browser. Combined with CVE-2026-50053, a crafted URL can run script in another signed-in user's session, letting an attacker read mailbox data and act as that user.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
No product ranges from the sources yet.
Check the installed ZCS version (su - zimbra -c zmcontrol -v); 10.1.16 is affected.
Upgrade Zimbra Collaboration Suite to 10.1.17 or later.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
A reflected cross-site scripting vulnerability in the Classic Web Client of Zimbra Collaboration Suite (ZCS) allows an attacker to inject JavaScript through the packages parameter of the /h/rest document editor. The editor inserts package names into script attributes without HTML encoding. When combined with CVE-2026-50053, an attacker with an ordinary Zimbra account can supply their own authentication token and document identifiers in a URL and execute JavaScript in another signed-in user's Zimbra browser session when that user opens the URL. This permits reading mailbox data and performing authenticated actions as the victim. The issue affects ZCS 10.1.16 and was remediated in 10.1.17.
This page as .md · .json · in your agent: get_signal("CVE-2026-10632")
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