{"id":"GHSA-hj76-42vx-jwp4","summary":"seroval Affected by Prototype Pollution via JSON Deserialization","details":"Due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization.\nThis affects only JSON deserialization functionality.\n\nAs there is no known workaround, please upgrade to the latest version.","aliases":["CVE-2026-23736"],"modified":"2026-01-22T15:52:36.694621Z","published":"2026-01-21T15:41:14Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-01-21T15:41:14Z","nvd_published_at":"2026-01-21T23:15:52Z","cwe_ids":["CWE-1321"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23736"},{"type":"WEB","url":"https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060"},{"type":"PACKAGE","url":"https://github.com/lxsmnsyc/seroval"}],"affected":[{"package":{"name":"seroval","ecosystem":"npm","purl":"pkg:npm/seroval"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-hj76-42vx-jwp4/GHSA-hj76-42vx-jwp4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}