CVE-2026-44456

Hono: bodyLimit() can be bypassed for chunked / unknown-length requests

MEDIUM
6.5
CVSS Score
Published: May 13, 2026 at 02:58 PM UTC
Updated: October 26, 2026 at 02:10 PM UTC
2 products affected across 2 vendorsHonoHono

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.12.16
v < 4.12.16
Affected range stops below 4.12.16, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/honojs/hono/security/advisories/GHSA-9vqf-7f2p-gf9v

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-400

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