CVE-2026-54281

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 80% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.7Exploit: NoneExposed: 0

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

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.24, an authentication bypass vulnerability exists in @nestjs/platform-fastify. When middleware is registered through NestJS's MiddlewareConsumer.forRoutes() API on the Fastify adapter, an unauthenticated client can bypass the Nest middleware registered for that route by simply appending a trailing slash (/) to the request URL. This bypass works on the default Fastify adapter configuration. This vulnerability is fixed in 11.1.24.

CVSS v3
8.7
EG Score
8.7(medium)
EPSS
20.3%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 24, 2026

Advisory Details (1)

Auto-updated Jun 23, 2026
Patch available. Sources: github.
github Patch Available

Middleware Bypass on Fastify via Trailing Slash · Advisory · nestjs/nest · GitHub

https://github.com/nestjs/nest/security/advisories/GHSA-6v32-fjc9-9qf6

Vendor Advisories for CVE-2026-54281(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@nestjs/platform-fastify—11.1.24—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 49× 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. 2026-07-07 00:15 UTCEG score recompute
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 22:55 UTCEG score recompute
  7. 2026-07-05 10:39 UTCEG score recompute
  8. 2026-07-05 02:31 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 22:15 UTCEG score recompute
  11. 2026-07-04 09:57 UTCEG score recompute
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-03 20:54 UTCEG score recompute
  15. 2026-07-03 08:36 UTCEG score recompute
  16. 2026-07-02 20:18 UTCEG score recompute
  17. 2026-07-02 07:58 UTCEG score recompute
  18. 2026-07-01 19:41 UTCEG score recompute
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-07-01 07:25 UTCEG score recompute
  21. 2026-06-30 23:22 UTCEPSS rescore
  22. 2026-06-30 19:08 UTCEG score recompute
  23. 2026-06-30 06:51 UTCEG score recompute
  24. 2026-06-29 18:33 UTCEG score recompute
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 24 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 04:37 UTCEG score recompute
  3. 2026-06-28 15:56 UTCEG score recompute
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-28 03:39 UTCEG score recompute
  8. 2026-06-27 15:22 UTCEG score recompute
  9. 2026-06-27 03:08 UTCEPSS rescore
  10. 2026-06-27 03:06 UTCEG score recompute
  11. 2026-06-26 14:49 UTCEG score recompute
  12. 2026-06-26 02:23 UTCEG score recompute
  13. 2026-06-25 14:06 UTCEG score recompute
  14. 2026-06-25 13:49 UTCEPSS rescore
  15. 2026-06-25 01:49 UTCEG score recompute
  16. 2026-06-24 14:05 UTCEPSS rescore
  17. 2026-06-24 13:32 UTCEG score recompute
  18. 2026-06-24 01:15 UTCEG score recompute
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 21:33 UTCEPSS rescore
  21. 2026-06-23 12:59 UTCEG score recompute
  22. 2026-06-23 00:04 UTCEG score recompute▲ 8.70
  23. 2026-06-23 00:00 UTCMITRE cvelistV5CVSS v3 → 8.7 · CVSS v4 → 8.7
  24. 2026-06-15 20:46 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-54281?
CVE-2026-54281 is a high vulnerability published on June 15, 2026. Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.24, an authentication bypass vulnerability exists in @nestjs/platform-fastify. When middleware is registered through NestJS's MiddlewareConsumer.forRoutes() API on the Fastify adapter, an unauthenticated…
When was CVE-2026-54281 disclosed?
CVE-2026-54281 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54281 actively exploited?
CVE-2026-54281 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54281?
CVE-2026-54281 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-54281?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54281, 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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