CVE-2025-23724Network attack vector

Browser script execution via reflected input

Published Jan 23, 2025 · Updated May 11, 2026

Reflected XSS in University Quizzes Online 1.4 and earlier allows remote attackers to execute script in a user’s browser via a crafted link. Patchstack and the CNA do not disclose the affected parameter or code locus, only that request input is reflected into generated page output without safe neutralization. Exploitation requires a user to open attacker-supplied content, after which script runs in the site’s browser origin and can act with that user’s web privileges.

CVSS severity7.1
High
EPSS probability0.26%
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 University Quizzes Online 1.4 and earlier allows remote attackers to execute script in a user’s browser via a crafted link. Patchstack and the CNA do not disclose the affected parameter or code locus, only that request input is reflected into generated page output without safe neutralization. Exploitation requires a user to open attacker-supplied content, after which script runs in the site’s browser origin and can act with that user’s web privileges.

The record

CVE
CVE-2025-23724
Published
Jan 23, 2025
Updated
May 11, 2026
Vendor
Oleksandr Ustymenko
Product
University Quizzes Online
Classifications
CWE-79, CAPEC-591, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=0 <=1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oleksandr Ustymenko · University Quizzes Onlineversion=0 <=1.4

Published CVSS scores

7.1Patchstack CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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
T1189Drive-by Compromise

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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