How severe is CVE-2021-40577?

CVE-2021-40577 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-40577 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40577?

CVE-2021-40577 affects Online Enrollment Management System Project Online Enrollment Management System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40577?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40577 published?

CVE-2021-40577 was published on 2021-11-08 and last updated on 2026-06-17.

CVE-2021-40577

CVE-2021-40577 is a medium-severity vulnerability in Online Enrollment Management System Project Online Enrollment Management System with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Online Enrollment Management System Project Online Enrollment Management System
Published: 2021-11-08
Last modified: 2026-06-17

Description

A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Enrollment Management System in PHP and PayPal Free Source Code 1.0 in the Add-Users page via the Name parameter.

Frequently asked questions

What is CVE-2021-40577?: A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Enrollment Management System in PHP and PayPal Free Source Code 1.0 in the Add-Users page via the Name parameter.
How severe is CVE-2021-40577?: CVE-2021-40577 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-40577 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40577?: CVE-2021-40577 affects Online Enrollment Management System Project Online Enrollment Management System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40577?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40577 published?: CVE-2021-40577 was published on 2021-11-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:online_enrollment_management_system_project:online_enrollment_management_system:1.0:*:*:*:*:*:*:*

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