VulnerabilityAnalyzed

CVE-2024-43787

Hono CSRF middleware can be bypassed using crafted Content-Type header.

MEDIUM 5.0EPSS 0.24%

Does this matter?

Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 3.1: 5.0 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
EPSS: 0.24% probability · 16th percentile
CISA KEV: Not listed
Weakness: CWE-352
Affected: hono/hono
Source: security-advisories@github.com

References

https://github.com/honojs/hono/blob/b0af71fbcc6dbe44140ea76f16d68dfdb32a99a0/src/middleware/csrf/index.ts#L16-L17Product
https://github.com/honojs/hono/commit/41ce840379516410dee60c783142e05bb5a22449Patch
https://github.com/honojs/hono/security/advisories/GHSA-rpfr-3m35-5vx5Exploit, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.