CVE-2020-36064: Online Course Registration v1.0 was discovered to contain hardcoded credentials in the source code which allow

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-36064 is a critical-severity flaw (CVSS 9.8) affecting online course registration. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Online Course Registration v1.0 was discovered to contain hardcoded credentials in the source code which allows attackers access to the control panel if compromised.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 27%)
CISA exploited list	No
Weakness	CWE-798
Published	2022-01-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: online course registration project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-01-31 13:15 UTCPublished CVE record published
2026-06-17 03:14 UTCUpdated Record last modified

online course registration project online course registration DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy online-course-registration || rpm -q online-course-registration || online-course-registration --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison online-course-registration sudo apt install online-course-registration=<VERSION_BEFORE_1.0> sudo apt-mark hold online-course-registration

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list online-course-registration sudo dnf downgrade online-course-registration-<VERSION_BEFORE_1.0> sudo dnf versionlock add online-course-registration

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-36064?

online course registration: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-36064 being exploited?

CVE-2020-36064 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-36064 affect?

CVE-2020-36064 affects online course registration. Severity is critical (CVSS 9.8). Online Course Registration v1.0 was discovered to contain hardcoded credentials in the source code which allows attackers access to the control panel if compromised.

How urgent is CVE-2020-36064?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-9729 HIGH 7.3 DOWNGRADE A vulnerability was detected in PHPGurukul Online Course Registration 3.1
CVE-2025-15406 MEDIUM 6.3 UPGRADE A flaw has been found in PHPGurukul Online Course Registration up to 3.1
CVE-2025-50485 HIGH 7.1 DOWNGRADE Improper session invalidation in the component /crm/change-password.php of PHPGurukul Online Course Registrati
CVE-2026-0547 MEDIUM 6.3 UPGRADE A vulnerability was found in PHPGurukul Online Course Registration up to 3.1
CVE-2025-9307 HIGH 7.3 DOWNGRADE A flaw has been found in PHPGurukul Online Course Registration 3.1

References

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