Vulnerability in Honojs Hono
CVE-2026-59896
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.11.8 before 4.12.27, hono/jsx did not isolate context values per request during server-side rendering, allowing createContext, useContext, jsxRend…
Vulnerability class: Race Condition
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Honojs Hono — versions >= 4.11.8, < 4.12.27
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-59896?
- CVE-2026-59896 is a medium-severity vulnerability in Honojs Hono, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.5/10. Published 2026-07-08.
- How severe is CVE-2026-59896?
- Medium severity. CVSS v3 base score is 6.5 out of 10.