---
title: "CVE-2023-37580: Zimbra Collaboration (ZCS) 8… | CubePath"
description: "Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41 allows XSS in the Zimbra Classic Web Client."
language: en
source: https://cubepath.com/security/cve/CVE-2023-37580
---

# CVE-2023-37580: Zimbra Collaboration (ZCS) 8… | CubePath

## Description

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

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-37580)

## Key data

### CVSS 3.1 Medium 6.1

Score published by CISA-ADP in the CVE record.

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

| Metric                 | Value    | What it means                                                                       |
| ---------------------- | -------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network  | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low      | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None     | No account or privileges are needed.                                                |
| User interaction       | Required | A user has to do something first, such as opening a file or following a link.       |
| Scope                  | Changed  | The impact can reach other components beyond the vulnerable one.                    |
| Confidentiality impact | Low      | Limited effect on the secrecy of data.                                              |
| Integrity impact       | Low      | Limited effect on the trustworthiness of data.                                      |
| Availability impact    | None     | No effect on availability.                                                          |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.49083 (49.1% probability)

Percentile

98.9%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

Added to the catalog

Jul 27, 2023

Federal due date

Aug 17, 2023

### CISA assessment as of Jan 27, 2025

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

no

Technical impact

partial

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-79](https://cwe.mitre.org/data/definitions/79.html) Improper Neutralization of Input During Web Page Generation

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [wiki.zimbra.com/wiki/Security\_Center](https://wiki.zimbra.com/wiki/Security%5FCenter)
- [wiki.zimbra.com/wiki/Zimbra\_Responsible\_Disclosure\_Policy](https://wiki.zimbra.com/wiki/Zimbra%5FResponsible%5FDisclosure%5FPolicy)
- [\[oss-security\] 20231117 CVE-2023-37580 (and others): XSS vulnerabilities in Zimbra Collaboration Suite](http://www.openwall.com/lists/oss-security/2023/11/17/2)  (openwall.com) mailing-list

## Timeline

1. ID reserved Jul 7, 2023
2. Added to CISA KEV Jul 27, 2023
3. Record published Jul 31, 2023
4. Record last updated Oct 30, 2025

## Look up another CVE

## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:01 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)