CVE-2026-44458

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 59/100
Published: 2026-05-13 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

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

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, the JSX renderer escapes style attribute object values for HTML but not for CSS. Untrusted input in a style object value or property name can therefore inject additional CSS declarations into the rendered style attribute. The impact is limited to CSS and does not allow JavaScript execution or HTML attribute breakout. This vulnerability is fixed in 4.12.18.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
hono hono < 4.12.18

Bug Bounty Relevance

59 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

4.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS — Exploitation Probability

0.20%
Raw Score 0.001970
Percentile 9.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00197
2026-10-28
0.00197

Intelligence Sources

nvd ref →