---
title: "CVE-2023-22621: Strapi vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-22621/
description: "CVE-2023-22621 (Strapi): Strapi through 4.5.5 allows authenticated Server-Side Template Injection (SSTI) that can be exploited to execute arbitrary code on…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-04-19
date_modified: 2026-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-22621"
kev: false
cvss: 10
epss: 0.706
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-22621: Strapi vulnerability

**Signal:** High exploit likelihood. EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 70.6% , percentile 99: FIRST’s model estimates a 70.6% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Editorial verdict: Check exposure. Strapi CVE-2023-22894: 2023 Password-Hash Leak Now in KEV — Only Strapi builds older than 4.8.0 (March 2023) are affected, but on those an unauthenticated attacker can take over the super admin, so any you find should be upgraded or taken offline today.

## What it is

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.

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 70.60% probability of exploitation activity in the next 30 days; percentile 99.

## Sources

- [CVE.org record CVE-2023-22621](https://www.cve.org/CVERecord?id=CVE-2023-22621)
- [NVD entry CVE-2023-22621](https://nvd.nist.gov/vuln/detail/CVE-2023-22621)
- [github.com](https://github.com/strapi/strapi/releases)
- [ghostccamm.com](https://www.ghostccamm.com/blog/multi_strapi_vulns/)
- [strapi.io](https://strapi.io/blog/security-disclosure-of-vulnerabilities-cve)

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Source page: https://erroneo.us/security/cve/CVE-2023-22621/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt