{"cve":"CVE-2021-33558","nvd":{"published":"2021-05-27T11:15:07.373","modified":"2026-06-17T03:54:47.617","status":"Modified","description":"Boa 0.94.13 allows remote attackers to obtain sensitive information via a misconfiguration involving backup.html, preview.html, js/log.js, log.html, email.html, online-users.html, and config.js. NOTE: multiple third parties report that this is a site-specific issue because those files are not part of Boa.","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:N/A:N","score":7.5},"cwes":[],"references":["https://github.com/mdanzaruddin/CVE-2021-33558.","https://github.com/mdanzaruddin/CVE-2021-33558./issues/1","https://sourceforge.net/projects/boa/files/boa/0.94.13/","https://github.com/mdanzaruddin/CVE-2021-33558.","https://github.com/mdanzaruddin/CVE-2021-33558./issues/1"],"products":["boa:boa"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-33558","score":0.12307,"percentile":0.96189,"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."]}