{"cve":"CVE-2021-25964","nvd":{"published":"2021-10-04T15:15:07.310","modified":"2026-06-17T03:42:41.313","status":"Modified","description":"In “Calibre-web” application, v0.6.0 to v0.6.12, are vulnerable to Stored XSS in “Metadata”. An attacker that has access to edit the metadata information, can inject JavaScript payload in the description field. When a victim tries to open the file, XSS will be triggered.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://github.com/janeczku/calibre-web/commit/32e27712f0f71fdec646add20cd78b4ce75acfce","https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25964","https://github.com/janeczku/calibre-web/commit/32e27712f0f71fdec646add20cd78b4ce75acfce","https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25964"],"products":["janeczku:calibre-web"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-25964","score":0.00549,"percentile":0.45962,"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."]}