Dashboard / CVE-2026-124551

CVE-2026-124551

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 52/100
Published: 2026-11-08 Modified: 2026-11-12 First seen: 2026-11-08 Status: active

Attack Surface

Network No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: X
AT: Present
VC: High
VI: None
VA: None

Description

ClassroomIO through 1.0.0 contains an authorization bypass vulnerability that allows authenticated users of any organization to clone other tenants' courses via the POST /course/:courseId/clone endpoint. Attackers who know a target course id can copy its sections, lessons, exercises, and quiz answer keys into their own organization, exposing private course content.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
classroomio classroomio 0
classroomio classroomio 0

References & Advisories (7)

Bug Bounty Relevance

52 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

6.0 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.26%
Raw Score 0.002610
Percentile 18.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00261
2026-11-12
0.00261
2026-11-10
0.00261
2026-11-09
0.00261

Intelligence Sources

mitre ref →
nvd ref →

External Links