What is CVE-2026-54288?

CVE-2026-54288 is a medium-severity vulnerability in Honojs Hono, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-06-22.

How severe is CVE-2026-54288?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Honojs Hono

CVE-2026-54288

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 G…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Honojs Hono — versions < 4.12.25

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54288?: CVE-2026-54288 is a medium-severity vulnerability in Honojs Hono, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-06-22.
How severe is CVE-2026-54288?: Medium severity. CVSS v3 base score is 6.5 out of 10.