{"cve":"CVE-2021-42838","nvd":{"published":"2021-11-15T10:15:07.857","modified":"2026-06-17T04:10:11.320","status":"Modified","description":"Grand Vice info Co. webopac7 book search field parameter does not properly restrict the input of special characters, thus unauthenticated attackers can inject JavaScript syntax remotely, and further perform reflective XSS attacks.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://www.twcert.org.tw/tw/cp-132-5286-b92c8-1.html","https://www.twcert.org.tw/tw/cp-132-5286-b92c8-1.html"],"products":["vice:webopac"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-42838","score":0.0063,"percentile":0.50215,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}