Security Digest · Vulnerability record
CVE-2023-22621: Strapi vulnerability
Strapi through 4.5.5 allows authenticated Server-Side Template Injection (SSTI) that can be exploited to execute arbitrary code on the server.
CVSS 10.0 Critical EPSS 70.6% · p99 Check exposure
Should you act?
High exploit likelihood
EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- 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.
Weakness type: CWE-74.
Product: Strapi · Assigned by: mitre · Published: 2023-04-19
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| n/a | n/a | see vendor advisory |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADP | 3.1 | 10 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- 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.
Timeline
- — erroneo.us brief: Strapi CVE-2023-22894: 2023 Password-Hash Leak Now in KEV
- — CVE record published by mitre
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- CVE.org record CVE-2023-22621 cve.org
- NVD entry CVE-2023-22621 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- ghostccamm.com ghostccamm.com
- strapi.io strapi.io