CVE-2020-20636: SQL injection vulnerability found in Joyplus-cms v.1.6.0 allows a remote attacker to access sensitive informat

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HIGH 7.5REMOTEDOWNGRADE

CVE-2020-20636 is a high-severity flaw (CVSS 7.5) affecting joyplus-cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability found in Joyplus-cms v.1.6.0 allows a remote attacker to access sensitive information via the id parameter of the goodbad() function.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-89
Published	2023-06-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: joyplus-cms project

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

Am I affected?

Timeline

2023-06-20 15:15 UTCPublished CVE record published
2026-06-17 03:03 UTCUpdated Record last modified

joyplus-cms project joyplus-cms DOWNGRADE

Affected: 1.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.6.0

1. Check installed version

apt-cache policy joyplus-cms || rpm -q joyplus-cms || joyplus-cms --version

2. No fixed release: DOWNGRADE to a release before 1.6.0 (Debian / Ubuntu)

apt-cache madison joyplus-cms sudo apt install joyplus-cms=<VERSION_BEFORE_1.6.0> sudo apt-mark hold joyplus-cms

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

dnf --showduplicates list joyplus-cms sudo dnf downgrade joyplus-cms-<VERSION_BEFORE_1.6.0> sudo dnf versionlock add joyplus-cms

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-2020-20636?

joyplus-cms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-20636 being exploited?

CVE-2020-20636 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-2020-20636 affect?

CVE-2020-20636 affects joyplus-cms. Severity is high (CVSS 7.5). SQL injection vulnerability found in Joyplus-cms v.1.6.0 allows a remote attacker to access sensitive information via the id parameter of the goodbad() function.

How urgent is CVE-2020-20636?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

References

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