What is CVE-2026-28228?

CVE-2026-28228 is a high-severity vulnerability in Openolat, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.8/10. Published 2026-03-30.

How severe is CVE-2026-28228?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Openolat

CVE-2026-28228

OpenOlat is an open source web-based e-learning platform for teaching, learning, assessment and communication. Prior to versions 19.1.31, 20.1.18, and 20.2.5, an authenticated user with the Author role can inject Velocity directives into a…

EPSS: 0.000 (6.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Openolat — versions < 19.1.31, < 20.1.18, < 20.2.5

Weakness classification (CWE)

CWE-1336 — Improper Neutralization of Special Elements Used in a Template Engine

References

https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-55qg-vvgj-ffh4 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-28228?: CVE-2026-28228 is a high-severity vulnerability in Openolat, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.8/10. Published 2026-03-30.
How severe is CVE-2026-28228?: High severity. CVSS v3 base score is 8.8 out of 10.