Dashboard / CVE-2026-59895

CVE-2026-59895

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-07-08 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Changed
C: Low
I: Low
A: None

Description

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.0.0 before 4.12.27, cx() in hono/css composes class names from plain strings but marks the result as already escaped without HTML-escaping the input, allowing untrusted className values used in a JSX class attribute during server-side rendering to break out of the attribute and inject arbitrary markup. This issue is fixed in version 4.12.27.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
hono hono 4.0.0 – 4.12.27

References & Advisories (3)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

6.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS — Exploitation Probability

0.33%
Raw Score 0.003270
Percentile 25.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00327
2026-10-28
0.00327

Intelligence Sources

nvd ref →

External Links