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CVE-2026-59896

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

Published: Jul 8, 2026Updated: Jul 10, 2026 Sources: CVE List NVDCWE-362
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 78.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-362

Affected Products

honojs
oss-projectaka hono
honoLibrary
OSS Libraries / web-framework
hono
oss-projectaka hono js
honoLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/honojs/hono/security/advisories/GHSA-hvrm-45r6-mjfj
github.com
https://github.com/honojs/hono/commit/fab3b13639339cbd5ba1166a5b23d9ac30c5f64f
github.com
https://github.com/honojs/hono/releases/tag/v4.12.27
github.com

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