Moderate severityNVD Advisory· Published Jul 8, 2026· Updated Jul 8, 2026
hono/jsx does not isolate context per request, leading to cross-request data disclosure
CVE-2026-59896
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 packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
hononpm | >= 4.11.8, < 4.12.27 | 4.12.27 |
Affected products
6- osv-coords4 versionspkg:apk/chainguard/langfuse-3-workerpkg:apk/chainguard/langfuse-fips-3-workerpkg:apk/chainguard/librechatpkg:apk/wolfi/langfuse-3-worker
< 3.224.1-r0+ 3 more
- (no CPE)range: < 3.224.1-r0
- (no CPE)range: < 3.224.1-r0
- (no CPE)range: < 0.8.7-r5
- (no CPE)range: < 3.224.1-r0
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-hvrm-45r6-mjfjghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59896ghsaADVISORY
- github.com/honojs/hono/commit/fab3b13639339cbd5ba1166a5b23d9ac30c5f64fghsax_refsource_MISCWEB
- github.com/honojs/hono/releases/tag/v4.12.27ghsax_refsource_MISCWEB
- github.com/honojs/hono/security/advisories/GHSA-hvrm-45r6-mjfjghsax_refsource_CONFIRMWEB
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