CVE-2026-44974Public exploitNetwork attack vector

Upload-filter bypass via duplicate header parameters

Published Jul 17, 2026 · Updated Jul 17, 2026

Parameter smuggling in @hapi/content before 6.0.2 allows remote attackers to bypass upload filename filters with duplicate header parameters. Content.disposition() retained the last duplicate value, while Content.type() retained the first duplicate charset or boundary rather than rejecting conflicts. Exploitation requires another request-processing component to select the opposite duplicate, allowing a disallowed upload filename to reach downstream handling.

CVSS severity7.7
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Parameter smuggling in @hapi/content before 6.0.2 allows remote attackers to bypass upload filename filters with duplicate header parameters. Content.disposition() retained the last duplicate value, while Content.type() retained the first duplicate charset or boundary rather than rejecting conflicts. Exploitation requires another request-processing component to select the opposite duplicate, allowing a disallowed upload filename to reach downstream handling.

The record

CVE
CVE-2026-44974
Published
Jul 17, 2026
Updated
Jul 17, 2026
Vendor
hapi
Product
@hapi/content
Classifications
CWE-436, CAPEC-34, CAPEC-105, CAPEC-273, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

hapi · @hapi/contentversion=< 6.0.2

Published CVSS scores

7.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:H/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-436Interpretation Conflict
CAPEC-34HTTP Response Splitting
CAPEC-105HTTP Request Splitting
CAPEC-273HTTP Response Smuggling
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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