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.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| unaffected |
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No data available yet.
Vendor Solution
Upgrade to HTTP-Parser-XS 0.18 or later.
Tracking
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Fri, 30 Oct 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | HTTP::Parser::XS versions before 0.18 for Perl truncate PATH_INFO at an encoded NUL byte in parse_http_request | |
| Weaknesses | CWE-626 | |
| References |
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-10-30T12:38:27.038Z
Reserved: 2026-10-25T10:58:24.860Z
Link: CVE-2026-116130
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-30T13:18:31.407
Modified: 2026-10-30T13:18:31.407
Link: CVE-2026-116130
Redhat
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OpenCVE Enrichment
No data.
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CWE-626
Null Byte Interaction Error (Poison Null Byte)