No exploitation reported

CVE-2024-50599

No exploitation reported by the sources we read.

Published2024-11-07
WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2024-11-0721:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-50599?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-50599?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Synacor zimbra collaboration suite

Branch	Affected	Fixed in	Source
8.8	= 8.8.15	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

wiki.zimbra.comRelease Notes
wiki.zimbra.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2024-11-08
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.16.12024-11-08
CISA-ADPweakness (CWE)CWE-792024-11-08
FIRST EPSSEPSS score63.6 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Published: 2024-11-07
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2024-50599?

Is CVE-2024-50599 actively exploited?

Active exploitation of CVE-2024-50599 has not been confirmed. Its EPSS score was 63.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-50599?

CVE-2024-50599 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

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