CVE-2026-28228 is a critical server-side template injection vulnerability affecting OpenOlat e-learning platform versions prior to 19.1.31, 20.1.18, and 20.2.5. An authenticated user with the Author role can inject Velocity directives into email templates, leading to arbitrary Java class instantiation and operating system command execution with high privileges, potentially as root. This vulnerability carries a CVSS v3.1 score of 8.8 (High), indicating a severe risk of complete compromise to confidentiality, integrity, and availability due to its low attack complexity and network vector. Currently, there is no evidence of active exploitation or public exploit code, and community discussion is minimal. Organizations are strongly advised to update affected OpenOlat instances immediately to mitigate this significant threat.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 19.1.31CPE matchmatch criteria | cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:* | ||
>= 20.0.0, < 20.1.18CPE matchmatch criteria | cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:* | ||
>= 20.2.0, < 20.2.5CPE matchmatch criteria | cpe:2.3:a:frentix:openolat:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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