CVE-2023-6673Network attack vector

Reflected XSS via undisclosed input handling

Published Feb 2, 2024 · Updated May 20, 2026

Reflected XSS in National Keep CyberMath 1.4 before 1.5 allows remote attackers to execute script via crafted web requests. TR-CERT has not published the affected endpoint, input parameter, or output operation that returns unneutralized input. Exploitation requires a user to open a crafted request, after which script runs in that user's browser context and can read or alter data available to the page.

CVSS severity6.1
Medium
EPSS probability0.33%
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 National Keep CyberMath 1.4 before 1.5 allows remote attackers to execute script via crafted web requests. TR-CERT has not published the affected endpoint, input parameter, or output operation that returns unneutralized input. Exploitation requires a user to open a crafted request, after which script runs in that user's browser context and can read or alter data available to the page.

The record

CVE
CVE-2023-6673
Published
Feb 2, 2024
Updated
May 20, 2026
Vendor
National Keep
Product
CyberMath
Classifications
CWE-79, CAPEC-591, T1566.002
Attack vector
network
Privileges
unauthenticated

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

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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=v1.4 <v1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

6.1Computer Emergency Response Team of the Republic of TurkeyCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1566.002Spearphishing Link

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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