CVE-2026-63239

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 51/100
Published: 2026-07-29 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Required
S: Changed
C: Low
I: Low
A: None

Description

A hard-coded AWS IAM credentials vulnerability in Koollab LMS allowed an attacker to access shared multi-tenant S3 buckets and SQS queues, exposing sensitive data and enabling malicious content injection, job manipulation, or email interception.

Weakness Classification (1)

Bug Bounty Relevance

51 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

5.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS — Exploitation Probability

0.21%
Raw Score 0.002070
Percentile 10.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00207
2026-10-28
0.00207

Intelligence Sources

nvd ref →