How severe is CVE-2023-22621?

CVE-2023-22621 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-22621 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 77% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22621?

CVE-2023-22621 affects Strapi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-22621?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-22621 published?

CVE-2023-22621 was published on 2023-04-19 and last updated on 2026-06-17.

CVE-2023-22621

CVE-2023-22621 is a high-severity vulnerability in Strapi with a CVSS 3.x base score of 7.2. Its EPSS exploit-prediction score of 77% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 77% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Strapi
Published: 2023-04-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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 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.
How severe is CVE-2023-22621?: CVE-2023-22621 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-22621 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 77% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22621?: CVE-2023-22621 affects Strapi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-22621?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-22621 published?: CVE-2023-22621 was published on 2023-04-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:strapi:strapi:*:*:*:*:*:*:*:*

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