{"id":"CVE-2025-66020","aliases":["GHSA-vqpr-j7v3-hqw9"],"url":"https://o3.security/vulnerability/CVE-2025-66020","summary":"Valibot has a ReDoS vulnerability in `EMOJI_REGEX`","details":"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.","published":"2025-11-26T01:49:38.276Z","modified":"2026-08-12T03:51:38.050472721Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"valibot","fixedVersion":"1.2.0"}],"fix":{"url":"https://github.com/open-circle/valibot/commit/cfb799db301a953a0950d5c05a34a3ab121262dc","label":"open-circle/valibot@cfb799d"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66020.json"},{"type":"ADVISORY","url":"https://github.com/open-circle/valibot/security/advisories/GHSA-vqpr-j7v3-hqw9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66020"},{"type":"FIX","url":"https://github.com/open-circle/valibot/commit/cfb799db301a953a0950d5c05a34a3ab121262dc"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:38.050472721Z"}}