Server-Side Template Injection in formio

Description

A Server-Side Template Injection (SSTI) was discovered in Form.io 2.0.0. This leads to Remote Code Execution during deletion of the default Email template URL. NOTE: the email templating service was removed after 2020. Additionally, the vendor disputes this issue indicating this is sandboxed and only executable by admins.

Recommendation

No fix is available yet. Followings are affected versions:

• <= 2.0.0

References

• GHSA-52vj-mr2j-f8jh
• CVE-2020-28246
• CWE-74
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Strapi plugins vulnerable to Server-Side Template Injection and Remote Code Execution in the Users-Permissions Plugin - CVE-2023-22621
• Prompty: Server-Side Template Injection to Remote Code Execution in the @prompty/core Nunjucks Renderer - Vulnerability
• Axios vulnerable to Server-Side Request Forgery - CVE-2020-28168
• LangSmith Client SDK Affected by Server-Side Request Forgery via Tracing Header Injection - CVE-2026-25528

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Tags:

npm

formio