{"cve":"CVE-2026-23736","nvd":{"published":"2026-01-21T23:15:52.340","modified":"2026-06-17T10:22:01.230","status":"Analyzed","description":"seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization. This vulnerability affects only JSON deserialization functionality. This issue is fixed in version 1.4.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-1321"],"references":["https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060","https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4"],"products":["lxsmnsyc:seroval"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-23736","score":0.00302,"percentile":0.22965,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-hj76-42vx-jwp4","url":"https://osv.dev/vulnerability/GHSA-hj76-42vx-jwp4","summary":"seroval Affected by Prototype Pollution via JSON Deserialization","modified":"2026-02-03T03:10:36.393960Z","packages":[{"ecosystem":"npm","name":"seroval","purl":"pkg:npm/seroval","ranges":["<1.4.1"],"fixed":["1.4.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}