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 ki
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-63235
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-632350.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-63235 | coverage & exploitation status | NVD · CVE.org |
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