An improper access control vulnerability in Koollab LMS
allowed an
unauthenticated attacker to forcibly terminate the session of any user given
their email address via the login kickout endpoint, resulting in a denial of
service.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Three Learning Koollab LMS unaffected
Version Status Constraints
5.3.2 affected —

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/ cve-icon
History

Wed, 29 Jul 2026 06:45:00 +0000

Type Values Removed Values Added
Description An improper access control vulnerability in Koollab LMS allowed an unauthenticated attacker to forcibly terminate the session of any user given their email address via the login kickout endpoint, resulting in a denial of service.
Title Improper access control vulnerability
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: CSA

Published:

Updated: 2026-07-29T06:23:33.494Z

Reserved: 2026-07-16T02:33:02.674Z

Link: CVE-2026-63235

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.