CVEvulnerability
CVE-2026-39410
4.8 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-08
- Last modified
- 2026-07-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weaknesses
- CWE-20
Description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a discrepancy between browser cookie parsing and parse() handling allows cookie prefix protections to be bypassed. Cookie names that are treated as distinct by the browser may be normalized to the same key by parse(), allowing attacker-controlled cookies to override legitimate ones. This vulnerability is fixed in 4.12.12.
Affected configurations
• hono hono (<= 4.12.11)
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- https://github.com/honojs/hono/commit/cc067c85592415cb1880ad3c61ed923472452ec0 Third Party Advisory
- https://github.com/honojs/hono/releases/tag/v4.12.12 Release Notes
- https://github.com/honojs/hono/security/advisories/GHSA-r5rp-j6wh-rvv4 Vendor Advisory