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    CVE-2026-63235

    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.

    Published:Jul 29, 2026
    Last Modified:Jul 29, 2026
    EPS:Jul 29, 2026
    EPSS Score:0.00209
    CVSS Score:3.7

    Affected Products

    Vendor
    Three Learning
    Product
    Koollab Lms

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    Related CVEs

    CVE-2026-63242 (CVSS 4.3) — A business logic vulnerability in Koollab LMS allowed an authenticated learner to set their lesson completion …
    CVE-2026-63241 (CVSS 3.1) — An insecure direct object reference vulnerability in Koollab LMS allowed an authenticated user to query the co…
    CVE-2026-63240 (CVSS 4.3) — An information disclosure vulnerability in Koollab LMS allowed an authenticated learner to obtain correct quiz…
    CVE-2026-63239 (CVSS 5.4) — A hard-coded AWS IAM credentials vulnerability in Koollab LMS allowed an attacker to access shared multi-tenan…
    CVE-2026-63238 (CVSS 6.5) — An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated attacker to take over any acc…
    CVE-2026-63237 (CVSS 4.8) — A TOTP two-factor authentication bypass vulnerability in Koollab LMS allowed an attacker to supply a client-co…
    CVE-2026-63236 (CVSS 3.7) — An improper access control vulnerability in Koollab LMS allowed an unauthenticated attacker to read another us…
    CVE-2026-63234 (CVSS 9.9) — A SQL injection and unsafe deserialisation vulnerability in Koollab LMS allowed an authenticated attacker to i…
    CVE-2026-63233 (CVSS 9.9) — A SQL injection and unsafe deserialisation vulnerability in Koollab LMS allowed an authenticated attacker to i…
    CVE-2026-63232 (CVSS 9.9) — A SQL injection and unsafe deserialisation vulnerability in Koollab LMS allowed an authenticated attacker to i…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High