CVE-2024-50599

Name: CVE-2024-50599
Creator: NVD / NIST
Published: 2024-11-07T21:15:06.88+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 61.32%

Last modified Jun 17, 2026

CVE-2024-50599 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A reflected Cross-Site Scripting (XSS) vulnerability has been identified in Zimbra Collaboration Suite (ZCS) 8.8.15, affecting one of the webmail calendar endpoints. This arises from improper handling of user-supplied input, allowing an attacker to inject malicious code that is reflected back in the HTML response.. EPSS estimates a 61.32% chance of exploitation in the next 30 days.

Description

A reflected Cross-Site Scripting (XSS) vulnerability has been identified in Zimbra Collaboration Suite (ZCS) 8.8.15, affecting one of the webmail calendar endpoints. This arises from improper handling of user-supplied input, allowing an attacker to inject malicious code that is reflected back in the HTML response.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

61.32%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Synacor	Zimbra Collaboration Suite	8.8.15

References

https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P46#Security_FixesRelease Notes
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory

Timeline

Published: Nov 7, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-50599?

How severe is CVE-2024-50599?

CVE-2024-50599 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 61.32% probability of exploitation in the next 30 days.

How do I fix CVE-2024-50599?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-50599?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST