🛡️ CVE-2026-63239

🟡 CVSS 5.4 — Medium ✅ No Known Exploit CWE-798 NVD
5.4
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2026-63239 is classified as CWE-798: Use of Hard-coded Credentials. Credentials are built into the product, so they are identical on every installation and cannot be rotated.

Affected software

CVE-2026-63239 is recorded against 1 package.

  • unknown

Timeline and source

Published on 29 July 2026 and last revised on 30 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.csa.gov.sg

Details

Severity MEDIUM
CVSS Score 5.4
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CWE CWE-798
Public Exploit ✅ No
Source NVD
Published 2026-07-29
Updated 2026-08-11
Modified 2026-07-30
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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