CVE-2023-22621
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...
- Published
- Apr 19, 2023
- Updated
- Nov 7, 2025
- Assigning CNA
- mitre
- Evidence observed
- Aug 4, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.4%
- Model date
- Oct 19, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
http/cves/2023/CVE-2023-22621.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: dsl,word($.matchers[*].type)
- oob: interactsh_reference($.template_text)
- CVE-2023-22621-POCExploit
CVE-2023-22621: SSTI to RCE by Exploiting Email Templates affecting Strapi Versions <=4.5.5
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