CSRF in Hono

CVE-2024-43787

Hono is a Web application framework that provides support for any JavaScript runtime. Hono CSRF middleware can be bypassed using crafted Content-Type header. MIME types are case insensitive, but isRequestedByFormElementRe only matches lower-case. As a result, attacker can bypass csrf middleware using upper-case form-like MIME type. This vulnerability is fixed in 4.5.8.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.002 (14.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2024-43787?
CVE-2024-43787 is a medium-severity vulnerability in Hono, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.0/10. Published 2024-08-22.
How severe is CVE-2024-43787?
Medium severity. CVSS v3 base score is 5.0 out of 10.