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OpenAdvisories
Medium · 6.5 CVE-2026-59896 EUVD-2026-42326GHSA-hvrm-45r6-mjfj

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

Published Jul 8, 2026 · Updated Jul 8, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
honojs hono >= 4.11.8, < 4.12.27 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling langfuse-3-compat 3.225.7-r6 —
Wolfi rolling langfuse-3-worker 3.224.1-r0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm hono >= 4.11.8, < 4.12.27 4.12.27 GHSA-hvrm-45r6-mjfj

References