CVE-2026-54288
MEDIUM
6.5
CVSS 3.1
Description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, the Body Limit Middleware trusts the request's Content-Length header to decide whether a body is within the limit. On AWS Lambda (API Gateway v1/v2, ALB, VPC Lattice, and Lambda@Edge) the body is delivered fully buffered and the adapter builds the request with the client-declared Content-Length, which need not match the actual payload. A client can declare a tiny Content-Length while sending a much larger body, slipping past the limit. This vulnerability is fixed in 4.12.25.
Metadata
Severity & Metrics
6.5
MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| honojs | hono | — | < 4.12.25 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-345 | cna | CWE-345: Insufficient Verification of Data Authenticity |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 6.5 | MEDIUM | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
References (1)
- https://github.com/honojs/hono/security/advisories/GHSA-rv63-4mwf-qqc2 https://github.com/honojs/hono/security/advisories/GHSA-rv63-4mwf-qqc2