hapijs up to 6.0.1 Content Content.disposition filename unrestricted upload

Summaryinfo

A vulnerability identified as critical has been detected in hapijs up to 6.0.1. This issue affects the function Content.disposition of the component Content. The manipulation of the argument filename leads to unrestricted upload. This vulnerability is referenced as CVE-2026-44974. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in hapijs up to 6.0.1. This issue affects the function Content.disposition of the component Content. The manipulation of the argument filename with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

@hapi/content provided HTTP Content-* headers parsing. Prior to 6.0.2, Content.disposition() retained the last occurrence of each duplicate parameter while Content.type() retained the first occurrence of duplicate charset and boundary parameters, creating a parameter-smuggling primitive when another component in the request-processing chain resolves duplicates the opposite way. This can allow an upload filename allowlist bypass in headers such as Content-Disposition: form-data; name="file"; filename="safe.txt"; filename="shell.php". This issue is fixed in version 6.0.2.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-44974 since 05/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

Upgrading to version 6.0.2 eliminates this vulnerability.

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Productinfo

Name

• hapijs

Version

• 6.0.0
• 6.0.1

CPE 2.3info

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• 🔒

CPE 2.2info

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• 🔒

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