CVE-2026-28228
Authenticated author can inject Velocity in emails, enabling server-side RCE.
Is CVE-2026-28228 being exploited?
Not confirmed. CVE-2026-28228 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-28228?
CVE-2026-28228 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-28228?
Yes. A fix has been recorded for CVE-2026-28228. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-28228 affect?
CVE-2026-28228 affects OpenOlat before 19.1.31, 20.1.18, 20.2.5. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28228?
Upgrade to patched OpenOlat release
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
OS command execution via Velocity reflection; attacker gains Tomcat-level privileges (often root in containers).
Patch when possible
- affected< 19.1.31
- affected< 20.1.18
- affected< 20.2.5
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.