CVE-2026-22244 OpenMetadata Server-Side Template Injection (SSTI) in FreeMarker email templates that leads to RCE

What is CVE-2026-22244?

CVE-2026-22244 is a high-severity code injection vulnerability in open-metadata OpenMetadata, published on 8 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

OpenMetadata is a unified metadata platform. Versions 1.5.0 through 1.11.3 are vulnerable to remote code execution via Server-Side Template Injection (SSTI) in FreeMarker email templates. An attacker must have administrative privileges to exploit the vulnerability. Version 1.11.4 contains a patch.

Weakness: CWE-94, CWE-1336

Which versions are affected by CVE-2026-22244?

2 open source packages ship an affected version, including org.open-metadata:platform. It affects 1 product.

Products include Open-Metadata Openmetadata.

How do I fix CVE-2026-22244?

Upgrade org.open-metadata:platform to 1.11.4 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-22244 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22244 exists.

Other vulnerabilities in open-metadata OpenMetadata

• CVE-2024-28255 Authentication Bypass in OpenMetadata Critical 9.8
• CVE-2024-28253 SpEL Injection in `PUT /api/v1/policies` in OpenMetadata Critical 9.4
• CVE-2024-28254 SpEL Injection in `GET /api/v1/events/subscriptions/validation/condition/<expr>` in OpenMetadata High 8.8
• CVE-2024-28847 SpEL Injection in `PUT /api/v1/events/subscriptions` in OpenMetadata High 8.8
• CVE-2024-28848 SpEL Injection in `GET /api/v1/policies/validation/condition/<expr>` in OpenMetadata High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5f29-2333-h9c7.