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Vendors / Synacor / Zimbra Collaboration

Synacor Zimbra Collaboration

CVE-2026-66912 Medium 5.3 Stored Cross-Site Scripting in Zimbra 0.5%
CVE-2026-66911 Medium 5.3 Stored Cross-Site Scripting in Zimbra 0.5%

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Contains data from the CISA Known Exploited Vulnerabilities Catalog. Use does not imply endorsement by CISA or DHS.

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EPSS scores by FIRST.org and Empirical Security (https://www.first.org/epss). This product uses EPSS scores but is not endorsed or certified by the EPSS SIG.

Exploit-availability signals from CVSS-BT by Stephen Shaffer (MIT license), which aggregates Metasploit (BSD), Nuclei templates (MIT), PoC-in-GitHub (CC0) and NVD (public domain).

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