Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability

When

2026-01-22 00:00 UTC · day precision

Where

Global (internet)

Category

cyber_exploit

Synacor Zimbra Collaboration Suite (ZCS) contains a PHP remote file inclusion vulnerability that could allow for remote attackers to craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory.

Sources

• CISA ↗ · first seen 2026-01-22 00:00 UTC

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