Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-100877
mathurvishal CloudClassroom-PHP-Project registrationform.php cross site scripting
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N N P N L N 2.1 .0026 16.5 —
AFFECTED
Product Versions Fixed
CloudClassroom-PHP-Project 5dadec098bfbbf3300d60c3494db3fb95b66e7be – —
TIMELINE
Sep 27 Reserved by VulDB
Sep 27 Published (CNA: VulDB)
Sep 28 EXPLOIT PUBLISHED — CVE-2026-100877 (mathurvishal CloudClassroom-PHP-Project). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 27, 2026 | Reserved | Reserved by VulDB |
| September 27, 2026 | Published | Published (CNA: VulDB) |
| September 28, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-100877 (mathurvishal CloudClassroom-PHP-Project). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| mathurvishal | CloudClassroom-PHP-Project | — | 5dadec098bfbbf3300d60c3494db3fb95b66e7be | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-100877 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
