CVE-2023-6439Public exploitNetwork attack vector

Browser script execution via undisclosed reflected input

Published Nov 30, 2023 · Updated Aug 2, 2024

Reflected XSS in ZenTao 18.8 allows remote authenticated users to execute script in a victim's browser through a crafted request. The public record does not identify the affected function, input parameter, or output operation that fails to neutralize attacker-controlled content. Exploitation requires low-privileged access and victim interaction; reported impact is limited to browser-side integrity, with no service interruption identified.

CVSS severity6.1
Medium
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in ZenTao 18.8 allows remote authenticated users to execute script in a victim's browser through a crafted request. The public record does not identify the affected function, input parameter, or output operation that fails to neutralize attacker-controlled content. Exploitation requires low-privileged access and victim interaction; reported impact is limited to browser-side integrity, with no service interruption identified.

The record

CVE
CVE-2023-6439
Published
Nov 30, 2023
Updated
Aug 2, 2024
Vendor
Qingdao Esoft Tianchuang Network Technology Co., Ltd.
Product
ZenTao
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=18.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Qingdao Esoft Tianchuang Network Technology Co., Ltd. · ZenTaoversion=18.8

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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