CVE-2026-44974Parameter smuggling in @hapi/content header parser allows upload-filter bypass via duplicate parameters

Description

@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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/hapijs/content/security/advisories/GHSA-36hh-x5p5-jgc8
• https://github.com/hapijs/content/commit/3850079550c191d25e3643dc82a6d61144db8c2f