Vulnerability · Published Mar 27, 2026 · Assigned by VulDB

CVE-2026-4973SourceCodester Online Quiz System add-question.php cross site scripting

Low 3.5

In plain English

A low-severity cross-site scripting in Online Quiz System from SourceCodester. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)3.5Low

Exploit odds (30 days)0.2%top 83.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in SourceCodester Online Quiz System up to 1.0. Affected by this vulnerability is an unknown functionality of the file endpoint/add-question.php. Performing a manipulation of the argument quiz_question results in cross site scripting. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Affected products (as reported)

Vendor	Product	Versions
SourceCodester	Online Quiz System	1.0

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-353860 | SourceCodester Online Quiz System add-question.php cross site scripting vdb-entry, technical-description
VDB-353860 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #778101 | SourceCodester Online Quiz System 1.0 Cross Site Scripting third-party-advisory
https://gist.github.com/Mohdanass/5992b65cca5612c036f1d31d8d8f0646 exploit
https://www.sourcecodester.com/ product