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Servers and applications

CVE-2023-37580

Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41 allows XSS in the Zimbra Classic Web Client.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 27 Jul 2023.

Severity
Medium 6.1
Published
31 Jul 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.8.15
Sources
NVD

Affected software

SoftwareAffected versions
Zimbra CollaborationServers and applications · cpe:a:synacor:zimbra_collaboration_suite
  • Version 8.8.15-p40
  • Version 8.8.15-p38
  • Version 8.8.15-p37
  • Version 8.8.15-p35
All 14 release lines
  • From 8.8.0 before 8.8.15
  • Version 8.8.15-p3
  • Version 8.8.15-p5
  • Version 8.8.15-p11
  • Version 8.8.15-p26
  • Version 8.8.15-p30
  • Version 8.8.15-p31
  • Version 8.8.15-p32
  • Version 8.8.15-p33
  • Version 8.8.15-p34
  • Version 8.8.15-p35
  • Version 8.8.15-p37
  • Version 8.8.15-p38
  • Version 8.8.15-p40

Known exploited

CISA name
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due for US agencies
17 Aug 2023
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-37580
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-37580