NVD

CVE-2026-56761 Detail

Received

This CVE record has recently been published to the CVE List and has been included within the NVD dataset.

Description

hono before 4.12.14 contains an html injection vulnerability in jsx server-side rendering that allows attackers to inject unintended html by using malformed attribute names. Attackers can craft specially crafted attribute keys containing characters like quotes or angle brackets to break html tag boundaries and inject arbitrary attributes or elements.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

Nist CVSS score does not match with CNA score

CNA: VulnCheck

CVSS-B 5.3 MEDIUM

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.x Severity and Vector Strings:

CNA: VulnCheck

Base Score: 4.3 MEDIUM

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/honojs/hono/security/advisories/GHSA-458j-xx4x-4375	VulnCheck
https://www.vulncheck.com/advisories/hono-html-injection-via-improper-jsx-attribute-name-handling-in-ssr	VulnCheck

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	VulnCheck

Change History

2 change records found show changes

New CVE Received from VulnCheck 6/24/2026 9:16:37 AM

Action	Type	New Value
Added	Description	hono before 4.12.14 contains an html injection vulnerability in jsx server-side rendering that allows attackers to inject unintended html by using malformed attribute names. Attackers can craft specially crafted attribute keys containing characters like quotes or angle brackets to break html tag boundaries and inject arbitrary attributes or elements.
Added	CVSS V4.0	AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Added	CVSS V3.1	AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Added	CWE	CWE-79
Added	Reference	https://github.com/honojs/hono/security/advisories/GHSA-458j-xx4x-4375
Added	Reference	https://www.vulncheck.com/advisories/hono-html-injection-via-improper-jsx-attribute-name-handling-in-ssr
Added	Affected	[{"vendor":"hono","product":"hono","defaultStatus":"unaffected","packageURL":"pkg:npm/hono","versions":[{"version":"0","lessThan":"4.12.14","versionType":"semver","status":"affected"},{"version":"4.12.14","versionType":"semver","status":"unaffected"}]}]

Quick Info

CVE Dictionary Entry:
CVE-2026-56761
NVD Published Date:
06/24/2026
NVD Last Modified:
06/24/2026
Source:
VulnCheck

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Information Technology Laboratory

National Vulnerability Database