HIGH

CVE-2021-42671

CVSS v3

7.5

HIGH

EPSS Score

19.7 %

exploit probability, as of 2026-10-18

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-42671 yet.

Full record on NVD

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.

Technical details

Published: 2021-11-05

Frequently asked questions

What is CVE-2021-42671?

Is CVE-2021-42671 actively exploited?

Active exploitation of CVE-2021-42671 has not been confirmed. Its EPSS score was 19.7% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-42671?

CVE-2021-42671 has a CVSS v3 base score of 7.5 (HIGH severity).

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