CVE-2023-6473Public exploitNetwork attack vector

Browser script execution via unneutralized quiz metadata

Published Dec 2, 2023 · Updated Aug 2, 2024

Stored cross-site scripting in take-quiz.php in SourceCodester Online Quiz System 1.0 allows remote authenticated users to execute browser scripts. The handler accepts quiz_taker and year_section values and stores them for later page generation without neutralizing executable markup. An authenticated attacker must submit a payload and induce another user to view the stored content, enabling script execution in that user's application session.

CVSS severity3.5
Low
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in take-quiz.php in SourceCodester Online Quiz System 1.0 allows remote authenticated users to execute browser scripts. The handler accepts quiz_taker and year_section values and stores them for later page generation without neutralizing executable markup. An authenticated attacker must submit a payload and induce another user to view the stored content, enabling script execution in that user's application session.

The record

CVE
CVE-2023-6473
Published
Dec 2, 2023
Updated
Aug 2, 2024
Vendor
SourceCodester
Product
Online Quiz System
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 2, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SourceCodester · Online Quiz Systemversion=1.0

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
3.5VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
5.4NIST NVDCVSS: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 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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