How severe is CVE-2020-23828?

CVE-2020-23828 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-23828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-23828?

CVE-2020-23828 affects Online Course Registration Project Online Course Registration. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-23828?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-23828 published?

CVE-2020-23828 was published on 2020-09-15 and last updated on 2026-06-17.

CVE-2020-23828

CVE-2020-23828 is a critical-severity vulnerability in Online Course Registration Project Online Course Registration with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Online Course Registration Project Online Course Registration
Published: 2020-09-15
Last modified: 2026-06-17

Description

A File Upload vulnerability in SourceCodester Online Course Registration v1.0 allows remote attackers to achieve Remote Code Execution (RCE) on the hosting webserver by uploading a crafted PHP web-shell that bypasses the image upload filters. An attack uses /Online%20Course%20Registration/my-profile.php with the POST parameter photo.

Frequently asked questions

What is CVE-2020-23828?: A File Upload vulnerability in SourceCodester Online Course Registration v1.0 allows remote attackers to achieve Remote Code Execution (RCE) on the hosting webserver by uploading a crafted PHP web-shell that bypasses the image upload filters. An attack uses /Online%20Course%20Registration/my-profile.php with the POST parameter photo.
How severe is CVE-2020-23828?: CVE-2020-23828 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-23828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-23828?: CVE-2020-23828 affects Online Course Registration Project Online Course Registration. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-23828?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-23828 published?: CVE-2020-23828 was published on 2020-09-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:online_course_registration_project:online_course_registration:1.0:*:*:*:*:*:*:*

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