CVE-2023-22621

HIGHNVD 7.29.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 91% probability of exploitation within the next 30 days (top 0.3% of all CVEs). NVD baseline CVSS 7.2 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Elevated
7.2
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 77%
CISA-KEV: Not listedEPSS: 77%CVSS: 7.2Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.2
EG Score
9.0(high)
EPSS
99.5%
KEV
Not listed

Published

April 19, 2023

Last Modified

November 7, 2025

References (6)

Affected Packages

(2 across 1 ecosystem)
npm(2)
PackageVulnerable rangeFixed inDependents
@strapi/plugin-email—4.5.6—
@strapi/plugin-users-permissions—4.5.6—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-12 05:45 UTCEPSS rescore
  2. 2026-07-12 05:45 UTCEPSS rescore
  3. 2026-07-11 08:25 UTCEPSS rescore
  4. 2026-07-11 08:25 UTCEPSS rescore
  5. 2026-07-08 15:13 UTCEPSS rescore
  6. 2026-07-05 02:28 UTCEPSS rescore
  7. 2026-07-01 15:04 UTCEPSS rescore
  8. 2026-06-30 23:21 UTCEPSS rescore
  9. 2026-06-28 14:06 UTCEPSS rescore
  10. 2026-06-28 14:06 UTCEPSS rescore
  11. 2026-06-28 04:54 UTCEPSS rescore
  12. 2026-06-28 04:54 UTCEPSS rescore
  13. 2026-06-27 23:34 UTCOSV refresh
  14. 2026-06-27 03:07 UTCEPSS rescore
  15. 2026-06-25 13:48 UTCEPSS rescore
  16. 2026-06-25 13:48 UTCEPSS rescore
  17. 2026-06-24 14:03 UTCEPSS rescore
  18. 2026-06-24 14:03 UTCEPSS rescore
  19. 2026-06-23 21:31 UTCEPSS rescore
  20. 2026-06-23 21:31 UTCEPSS rescore
  21. 2026-06-21 01:58 UTCEPSS rescore
  22. 2026-06-21 01:58 UTCEPSS rescore
  23. 2026-06-17 17:51 UTCEPSS rescore
  24. 2026-06-17 17:51 UTCEPSS rescore
  25. 2026-06-15 17:47 UTCEPSS rescore
Show 25 more
  1. 2026-06-14 23:16 UTCEPSS rescore
  2. 2026-06-13 22:59 UTCEPSS rescore
  3. 2026-06-12 23:10 UTCEPSS rescore
  4. 2026-06-10 22:17 UTCEPSS rescore
  5. 2026-06-10 13:21 UTCEPSS rescore
  6. 2026-06-10 13:21 UTCEPSS rescore
  7. 2026-06-10 10:17 UTCOSV refresh
  8. 2026-06-08 14:15 UTCEPSS rescore
  9. 2026-06-08 14:15 UTCEPSS rescore
  10. 2026-06-05 22:46 UTCEPSS rescore
  11. 2026-06-05 22:46 UTCEPSS rescore
  12. 2026-06-05 22:46 UTCEPSS rescore
  13. 2026-06-05 06:09 UTCEPSS rescore
  14. 2026-06-05 06:09 UTCEPSS rescore
  15. 2026-06-02 20:12 UTCEPSS rescore
  16. 2026-06-02 20:12 UTCEPSS rescore
  17. 2026-06-02 20:12 UTCEPSS rescore
  18. 2026-05-28 13:43 UTCEPSS rescore
  19. 2026-05-28 13:43 UTCEPSS rescore
  20. 2026-05-26 13:43 UTCEPSS rescore
  21. 2026-05-26 13:43 UTCEPSS rescore
  22. 2026-05-26 07:18 UTCEPSS rescore
  23. 2026-05-26 07:17 UTCEPSS rescore
  24. 2026-05-26 07:17 UTCEPSS rescore
  25. 2026-05-25 02:42 UTCEG score recompute

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCsofianeelhor/CVE-2023-22621-POC
    First seen Apr 25, 2023

    CVE-2023-22621: SSTI to RCE by Exploiting Email Templates affecting Strapi Versions <=4.5.5

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-22621.yaml
    First seen Jan 1, 2023

    Strapi Versions <=4.5.5 - SSTI to Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-22621?
CVE-2023-22621 is a high vulnerability published on April 19, 2023. 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…
When was CVE-2023-22621 disclosed?
CVE-2023-22621 was first published in the National Vulnerability Database on April 19, 2023, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-22621 actively exploited?
CVE-2023-22621 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-22621?
CVE-2023-22621 has a CVSS v3 base score of 7.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2023-22621?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-22621, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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