CVE-2026-4973

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

CVSS 5.1 MEDIUMEPSS 0.2%CWE-79 CWE-94

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 5.1EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

27 Mar 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Affected products

SourceCodester · Online Quiz System

public PoCs found — 1

cve_referencegist.github.com/Mohdanass/5992b65cca5612c036f1d31d8d8f0646unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://gist.github.com/Mohdanass/5992b65cca5612c036f1d31d8d8f0646 https://vuldb.com/?ctiid.353860 https://vuldb.com/?id.353860 https://vuldb.com/?submit.778101 https://www.sourcecodester.com/