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Vulnerability record · CVE-2026-100877 · published 27 September 2026

CVE-2026-100877: Cross-site scripting vulnerability

A vulnerability was determined in mathurvishal CloudClassroom-PHP-Project up to 5dadec098bfbbf3300d60c3494db3fb95b66e7be. Affected by this vulnerability is an unknown functionality of the file registrationform.php. Executing a manipulation of the argument FName/LName/Addrs can lead to cross site scripting. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. The vendor was contacted early about this disclosure but did not respond in any way.

2.1 CVSS 4.0 Low EPSS 0.26% · top 83.7% CWE-79 · Cross-site scriptingCWE-94 · Code injection Deferred
2.1CVSS 4.0 base score, v2 5.0
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
28 Sep 2026Last modified by NVD

Description

A vulnerability was determined in mathurvishal CloudClassroom-PHP-Project up to 5dadec098bfbbf3300d60c3494db3fb95b66e7be. Affected by this vulnerability is an unknown functionality of the file registrationform.php. Executing a manipulation of the argument FName/LName/Addrs can lead to cross site scripting. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/rmsbpro/Advisory/blob/main/registrationform-stored-xss.md
https://vuldb.com/cve/CVE-2026-100877
https://vuldb.com/submit/915444
https://vuldb.com/vuln/410807
https://vuldb.com/vuln/410807/cti

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Source: NIST National Vulnerability Database (record CVE-2026-100877), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.