HTTP::Parser::XS up to 0.17 XS parser parse_http_request PATH_INFO input validation

Summaryinfo

A vulnerability described as critical has been identified in HTTP::Parser::XS up to 0.17. This issue affects the function parse_http_request of the component XS parser. Executing a manipulation of the argument PATH_INFO can lead to input validation. This vulnerability is registered as CVE-2026-116130. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in HTTP::Parser::XS up to 0.17 and classified as critical. This vulnerability affects the function parse_http_request of the component XS parser. The manipulation of the argument PATH_INFO with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

HTTP::Parser::XS versions before 0.18 for Perl truncate PATH_INFO at an encoded NUL byte in parse_http_request. The XS parser URL-decodes the request path and measures the result with strlen(), so PATH_INFO ends at the first byte decoded from %00. The pure-Perl backend is not affected. A remote attacker can send a path that a proxy or filter checks in full while the application routes on a shorter one.

The advisory is available at github.com. This vulnerability was named CVE-2026-116130 since 10/25/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 0.18 eliminates this vulnerability.

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Productinfo

Name

• HTTP::Parser::XS

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17

CPE 2.3info

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CPE 2.2info

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