How severe is CVE-2023-37580?

CVE-2023-37580 has a CVSS 3.1 base score of 6.1 (MEDIUM). EPSS estimates a 49.1% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2023-37580: Synacor Zimbra Collaboration Suite (ZCS) Cross-Site

CISA Known Exploited Vulnerabilities

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-07-27

Remediation due

2023-08-17

Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA notes
https://wiki.zimbra.com/wiki/Security_Center ; https://nvd.nist.gov/vuln/detail/CVE-2023-37580

Description

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

Severity

CVSS 3.1 · CISA6.1 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impactpartial

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

3 Links

Mailing lists

[oss-security] 20231117 CVE-2023-37580 (and others): XSS vulnerabilities in Zimbra Collaboration Suite

Other references

Record Details

Published

2023-07-31

Last updated

2025-10-30

Assigner (CNA)

mitre

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.