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CVE-2026-44974 — Vulnerability in @hapi/content — CVE Details

HIGH

@hapi/content header parser has a parameter smuggling issue that allows upload-filter bypass via duplicate parameters

Published May 27, 2026Updated September 10, 2026Source: osv

Summary

### Impact The two parsers resolved duplicates inconsistently and silently: - `Content.disposition()` retained the last occurrence of each parameter. - `Content.type()` retained the first occurrence of charset and boundary. Either behavior creates a parameter-smuggling primitive when another component in the request-processing chain (a WAF, reverse proxy, security filter, or alternate parser) resolves duplicates the opposite way. The primary attack vector is upload filename allowlist bypass: `Content-Disposition: form-data; name="file"; filename="safe.txt"; filename="shell.php"` ### Patches The issue has been patched in 6.0.2. ### Workarounds Pre or post validate headers looking for duplicates. ### Resources - [RFC 6266 §4.1 — Content-Disposition syntax](https://www.rfc-editor.org/rfc/rfc6266#section-4.1) - [RFC 7231 §3.1.1.1 — Content-Type syntax](https://www.rfc-editor.org/rfc/rfc7231#section-3.1.1.1) - [RFC 7230 §3.2.6 — token character set](https://www.rfc-editor.org/rfc/rfc7230#section-3.2.6)

Advisory Timeline

  • First published May 27, 2026 (138 days ago).
  • Last revised September 10, 2026 — 106 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update @hapi/content to 6.0.2 or later
npm install @hapi/content@6.0.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: npm (1).

PackageEcosystemAffectedFixed In
@hapi/content
npm
All versions6.0.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.6 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:H/SA:N

References

Frequently Asked Questions

What is CVE-2026-44974?
@hapi/content header parser has a parameter smuggling issue that allows upload-filter bypass via duplicate parameters This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.6/10).
How do I check if my project is affected by CVE-2026-44974?
CVE-2026-44974 affects @hapi/content. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-44974 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.6

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-36hh-x5p5-jgc8

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