{"cve":"CVE-2021-20654","nvd":{"published":"2021-02-10T09:15:12.887","modified":"2026-06-17T03:34:11.613","status":"Modified","description":"Wekan, open source kanban board system, between version 3.12 and 4.11, is vulnerable to multiple stored cross-site scripting. This is named 'Fieldbleed' in the vendor's site.","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://jvn.jp/en/jp/JVN80785288/","https://wekan.github.io/hall-of-fame/fieldbleed/","https://jvn.jp/en/jp/JVN80785288/","https://wekan.github.io/hall-of-fame/fieldbleed/"],"products":["wekan_project:wekan"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-20654","score":0.00751,"percentile":0.55004,"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."]}