CVE-2023-22621: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

April 19, 2023 (updated May 1, 2023)

Strapi through 4.5.5 allows authenticated Server-Side Template Injection (SSTI) that can be exploited to execute arbitrary code on the server. A remote attacker with access to the Strapi admin panel can inject a crafted payload that executes code on the server into an email template that bypasses the validation checks that should prevent code execution.

References

github.com/strapi/strapi/releases
nvd.nist.gov/vuln/detail/CVE-2023-22621
strapi.io/blog/security-disclosure-of-vulnerabilities-cve
www.ghostccamm.com/blog/multi_strapi_vulns/

Code Behaviors & Features

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