CVE-2023-34192: n/a
Source CVE Database V5
Exploited in the wild · KEV due 18 Mar 2025 · public detection template (Nuclei) · 77% EPSS : apply the vendor's fix or mitigations to affected systems now.
Data as of 26 Oct 2026, 06:26 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else.
- EPSS
- 77.2% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 6 Jul 2023
Detectable: evidence found.
nuclei template: Zimbra Collaboration Suite (ZCS) v.8.8.15 - Cross-Site Scripting
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 1.6 years after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by mitre
, 37 days before disclosure
CVE published
on cve.org
, t = 0
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, 1.6 years after disclosure
KEV remediation due
US federal deadline
, 1.7 years after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | Affected
| Fixed in– |
Description
CVE-2023-34192 is a critical Cross Site Scripting (XSS) vulnerability in Zimbra Collaboration Suite (ZCS) version 8.8.15. It allows a remote authenticated attacker to execute arbitrary code by injecting crafted scripts into the /h/autoSaveDraft function. The vulnerability requires the attacker to have valid user credentials and some user interaction to trigger the exploit. Successful exploitation can lead to full compromise of confidentiality, integrity, and availability of the affected system. No public exploits are currently known in the wild, but the high CVSS score of 9 reflects the severe impact and ease of exploitation. European organizations using Zimbra ZCS 8.8.15, especially those in government, finance, and critical infrastructure sectors, are at significant risk.