CVE-2026-56761
hono - HTML Injection via Improper JSX Attribute Name Handling in SSR
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jun 24, 2026
- Updated
- Jun 24, 2026
- Reserved
- Jun 22, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | 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 | VulnCheck |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
honohono |
|
References
- GitHub Security Advisory (GHSA-458j-xx4x-4375)vendor-advisory
- VulnCheck Advisory: hono - HTML Injection via Improper JSX Attribute Name Handling in SSRthird-party-advisory
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