{"cve":"CVE-2021-42671","nvd":{"published":"2021-11-05T13:15:09.383","modified":"2026-06-17T04:09:56.813","status":"Modified","description":"An incorrect access control vulnerability exists in Sourcecodester Engineers Online Portal in PHP in nia_munoz_monitoring_system/admin/uploads. An attacker can leverage this vulnerability in order to bypass access controls and access all the files uploaded to the web server without the need of authentication or authorization.","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":["CWE-425"],"references":["https://github.com/TheHackingRabbi/CVE-2021-42671","https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671","https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html","https://github.com/TheHackingRabbi/CVE-2021-42671","https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671"],"products":["engineers_online_portal_project:engineers_online_portal"],"source":"nvd","synced_at":"2026-10-19T21:24:39.218183596+00:00"},"epss":{"cve":"CVE-2021-42671","score":0.19676,"percentile":0.97396,"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."]}