What’s Vulnerable › Vulnerabilities
CVE-2026-44456: Hono: bodyLimit() can be bypassed for chunked / unknown-length requests
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-13 · updated 2026-10-26
- Weakness: CWE-400
Description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, bodyLimit() does not reliably enforce maxSize for requests without a usable Content-Length (e.g. Transfer-Encoding: chunked). Oversized requests can reach handlers and return 200 instead of 413. This vulnerability is fixed in 4.12.16.
Affected products
- honojs hono: before 4.12.16 — fixed in 4.12.16
How to fix
Upgrade to a fixed version: honojs hono 4.12.16. Check the vendor advisory for mitigations.
References
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