CVE-2026-39410 (GCVE-0-2026-39410)
Vulnerability from cvelistv5
Published
2026-04-08 14:44
Modified
2026-04-08 15:17
CWE
  • CWE-20 - Improper Input Validation
Summary
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.
Impacted products
Vendor Product Version
honojs hono Version: < 4.12.12
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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