Strapi through 4.5.5 allows authenticated Server-Side Template Injection (SSTI) that can…
Priority HIGH 80CWE-74Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.706 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed @strapi/plugin-users-permissions (npm): 4.5.6@strapi/plugin-email (npm): 4.5.6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | @strapi/plugin-users-permissions (npm) | before 4.5.6 | 4.5.6 | Patch available | GHSA-2h87-4q2w-v4hf |
| — | @strapi/plugin-email (npm) | before 4.5.6 | 4.5.6 | Patch available | GHSA-2h87-4q2w-v4hf |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- @strapi/plugin-users-permissions (npm) Vendor— Affected before 4.5.6 Fixed in 4.5.6 Patch available GHSA-2h87-4q2w-v4hf
- @strapi/plugin-email (npm) Vendor— Affected before 4.5.6 Fixed in 4.5.6 Patch available GHSA-2h87-4q2w-v4hf
Remediation
- Fix · GHSA-2h87-4q2w-v4hf @strapi/plugin-users-permissions (npm) Fixed in 4.5.6 Advisory →
- Fix · GHSA-2h87-4q2w-v4hf @strapi/plugin-email (npm) Fixed in 4.5.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-22621
- 2026-10-03 Alias added: GHSA-2h87-4q2w-v4hf
References
Advisory 2
Other 7
- https://github.com/strapi/strapi/releases
- https://github.com/strapi/strapi/security/advisories/GHSA-2h87-4q2w-v4hf
- https://github.com/strapi/strapi/pull/15385
- https://github.com/strapi/strapi/commit/921d30961d6ba96cc098f2aea197350a49f990bd
- https://github.com/strapi/strapi
- https://github.com/strapi/strapi/releases/tag/v4.5.6
- https://www.ghostccamm.com/blog/multi_strapi_vulns
More Strapi vulnerabilities
- TI-2023-09037 Query filter flaw in Strapi exposes sensitive user details KEVCVSS 3.1HIGH 7.2
- TI-2019-13554 strapi before 3.0.0-beta.17.5 mishandles password resets within… CVSS 3.1CRITICAL 9.8
- TI-2023-19887 Strapi Improper Rate Limiting vulnerability CVSS 3.1CRITICAL 9.8
- TI-2024-25161 Strapi v4.24.4 was discovered to contain a Server-Side Request Forgery (SSRF) via the… CVSS 3.1HIGH 8.6
- TI-2023-17071 Leaking sensitive user information still possible by filtering on private with prefix fields CVSS 3.1HIGH 8.6
- TI-2024-37136 Strapi Allows Unauthorized Access to Private Fields via parms.lookup CVSS 3.1HIGH 8.2
Sources
- CVE-2023-22621 · CVE Program
- CVE-2023-22621 · NVD
- FIRST EPSS
- GHSA-2h87-4q2w-v4hf · GitHub Advisory Database · CC BY 4.0
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