CVE-2025-66020

HIGH

Valibot 0.31.0-1.1.0 - Denial of Service via EMOJI_REGEX ReDoS

Title source: llm
STIX 2.1

Description

Valibot helps validate data using a schema. In versions from 0.31.0 to 1.1.0, the EMOJI_REGEX used in the emoji action is vulnerable to a Regular Expression Denial of Service (ReDoS) attack. A short, maliciously crafted string (e.g., <100 characters) can cause the regex engine to consume excessive CPU time (minutes), leading to a Denial of Service (DoS) for the application. This issue has been patched in version 1.2.0.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0028
EPSS Percentile 19.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-1333
Status published
Products (2)
npm/valibot 0.31.0 - 1.2.0npm
open-circle/valibot >= 0.31.0, < 1.2.0
Published Nov 26, 2025
Tracked Since Feb 18, 2026