CVE-2023-34192
CriticalPublished
Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
- Published
- Jul 6, 2023
- Updated
- Oct 21, 2025
- Assigning CNA
- mitre
- Evidence observed
- Feb 25, 2025
Primary CVSS
9.0/ 10Critical
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H77.3%
High · next 30 days
- Percentile
- 99.6%
- Model date
- Oct 19, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
Cross Site Scripting vulnerability in Zimbra ZCS v.8.8.15 allows a remote authenticated attacker to execute arbitrary code via a crafted script to the /h/autoSaveDraft function.
Sources
Repository evidence: Files: 1 · Repositories: 1
1 Template
http/cves/2023/CVE-2023-34192.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: status,word($.matchers[*].type)
Responsible use
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