CVE-2023-4253Public exploitNetwork attack vector

Stored XSS via unsanitized FAQ content

Published Sep 4, 2023 · Updated Apr 23, 2025

Stored XSS in QuantumCloud WPBot before 4.7.8 allows remote authenticated users with administrator access to execute script via FAQ content. The FAQ Builder stores FAQ query and answer values without sanitizing or escaping them, then renders those values in public bot-chat responses. Administrator access is required to save the payload, and execution requires a visitor to enter the matching FAQ in a chatbot session.

CVSS severity4.8
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in QuantumCloud WPBot before 4.7.8 allows remote authenticated users with administrator access to execute script via FAQ content. The FAQ Builder stores FAQ query and answer values without sanitizing or escaping them, then renders those values in public bot-chat responses. Administrator access is required to save the payload, and execution requires a visitor to enter the matching FAQ in a chatbot session.

The record

CVE
CVE-2023-4253
Published
Sep 4, 2023
Updated
Apr 23, 2025
Vendor
QuantumCloud
Product
WPBot
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=0 <4.7.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

QuantumCloud · WPBotversion=0 <4.7.8

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
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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