CVE-2026-59896CWE-362

hono/jsx does not isolate context per request, leading to cross-request data disclosure

Medium · published July 8, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
21.4
In the wild
Unconfirmed
What it is

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, jsxRenderer, or useRequestContext data from a different in-flight request to be used after an await in an async component. This issue is fixed in version 4.12.27.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00299 · 21.4th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2026-07-08T16:08Z
EPSS history
Timeline
  • 08 JUL 16:08Z
    hono/jsx does not isolate context per request, leading to cross-request data disclosure
    cvelistv5