CVE-2026-21440

CRITICALNVD 9.29.2—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.2 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 40% 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, nvd
Elevated
9.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.2Exploit: Elevated riskExposed: 0

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

AdonisJS is a TypeScript-first web framework. A Path Traversal vulnerability in AdonisJS multipart file handling may allow a remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This impacts @adonisjs/bodyparser through version 10.1.1 and 11.x prerelease versions prior to 11.0.0-next.6. This issue has been patched in @adonisjs/bodyparser versions 10.1.2 and 11.0.0-next.6.

CVSS v3
9.2
EG Score
9.2(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity92% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
63%
KEV
Not listed

Published

January 2, 2026

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Sep 15, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

AdonisJS Path Traversal in Multipart File Handling · Advisory · adonisjs/core · GitHub

https://github.com/adonisjs/core/security/advisories/GHSA-gvq6-hvvp-h34h
github_release Patch Available

Prevent path traversal during file uploads

Patch available: adonisjs/bodyparser v11.0.0-next.6 (pre-release)

https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.6
github_release Patch Available

Breaking - Prevent path traversal during file uploads

Patch available: adonisjs/bodyparser v10.1.2

https://github.com/adonisjs/bodyparser/releases/tag/v10.1.2
github_commit Patch Available

commit 6795c0e3fa82 (adonisjs/bodyparser)

Patch available: adonisjs/bodyparser v10.1.2 (contains commit 6795c0e3fa82)

https://github.com/adonisjs/bodyparser/commit/6795c0e3fa824ae275bbd992aae60609e96f0f03
github_commit Patch Available

commit 143a16f35602 (adonisjs/bodyparser)

Patch available: adonisjs/bodyparser v11.0.0-next.6 (contains commit 143a16f35602)

https://github.com/adonisjs/bodyparser/commit/143a16f35602be8561215611582211dec280cae6

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@adonisjs/bodyparser—11.0.0-next.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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.

Showing the most recent 100 of 172 total refreshes for this CVE.

  1. 2026-09-19 19:30 UTCOSV refresh
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-16 14:07 UTCEPSS rescore
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  1. 2026-08-20 22:55 UTCEPSS rescore
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  8. 2026-08-14 16:23 UTCEG score recompute
  9. 2026-08-13 22:00 UTCEPSS rescore
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  13. 2026-08-09 22:02 UTCEG score recompute
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  25. 2026-07-31 21:42 UTCOSV refresh
  26. 2026-07-30 01:30 UTCEPSS rescore
  27. 2026-07-27 14:13 UTCEPSS rescore
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  44. 2026-07-18 10:04 UTCEPSS rescore
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  46. 2026-07-16 17:03 UTCEPSS rescore
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  52. 2026-07-14 04:55 UTCOSV refresh
  53. 2026-07-13 22:30 UTCEPSS rescore
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  73. 2026-06-29 14:06 UTCEPSS rescore
  74. 2026-06-28 14:07 UTCEPSS rescore
  75. 2026-06-28 04:56 UTCEPSS rescore

Publicly available exploits

(1 reference)

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 PoCk0nnect/cve-2026-21440-writeup-poc
    First seen Jan 8, 2026

    poc and writeup for cve-2026-21440: a critical path traversal vulnerability in @adonisjs/bodyparser allowing arbitrary file writing

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-21440?
CVE-2026-21440 is a critical vulnerability published on January 2, 2026. AdonisJS is a TypeScript-first web framework. A Path Traversal vulnerability in AdonisJS multipart file handling may allow a remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This impacts @adonisjs/bodyparser through version 10.1.1 and 11.x prerelease…
When was CVE-2026-21440 disclosed?
CVE-2026-21440 was first published in the National Vulnerability Database on January 2, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21440 actively exploited?
CVE-2026-21440 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 37.3% of all scored CVEs.
What is the CVSS score of CVE-2026-21440?
CVE-2026-21440 has a CVSS v3 base score of 9.2 (NVD).
How do I remediate CVE-2026-21440?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21440, 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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