CVE-2023-6672Network attack vector

Stored XSS via undisclosed input handling

Published Feb 2, 2024 · Updated May 20, 2026

Stored XSS in National Keep CyberMath 1.4 before 1.5 allows remote authenticated users to execute script in another user's browser. The published advisory does not identify the affected input, storage path, output context, or missing encoding operation. Low-privileged access is required to store the payload, and another user must view affected content for script execution in that user's browser.

CVSS severity5.4
Medium
EPSS probability0.29%
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 National Keep CyberMath 1.4 before 1.5 allows remote authenticated users to execute script in another user's browser. The published advisory does not identify the affected input, storage path, output context, or missing encoding operation. Low-privileged access is required to store the payload, and another user must view affected content for script execution in that user's browser.

The record

CVE
CVE-2023-6672
Published
Feb 2, 2024
Updated
May 20, 2026
Vendor
National Keep
Product
CyberMath
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 2, 2024CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=v1.4 <v1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

National Keep · CyberMathversion=v1.4 <v1.5

Published CVSS scores

5.4TR-CERTCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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