CVE-2025-66020 – Valibot has a ReDoS vulnerability in `EMOJI_REGEX`

The following table lists the changes that have been made to the
CVE-2025-66020 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Nov. 26, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-1333
    Added Reference https://github.com/open-circle/valibot/commit/cfb799db301a953a0950d5c05a34a3ab121262dc
    Added Reference https://github.com/open-circle/valibot/security/advisories/GHSA-vqpr-j7v3-hqw9
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