CVE-2020-20189: SQL Injection vulnerability in NewPK 1.1 via the title parameter to admin\newpost.php.

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-20189 is a critical-severity flaw (CVSS 9.8) affecting newpk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL Injection vulnerability in NewPK 1.1 via the title parameter to admin\newpost.php.

Why this priority

Critical severity
Public exploit reference
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	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-89
Published	2020-12-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: newpk project

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

Am I affected?

Timeline

2020-12-14 21:15 UTCPublished CVE record published
2026-06-17 03:02 UTCUpdated Record last modified

newpk project newpk DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy newpk || rpm -q newpk || newpk --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison newpk sudo apt install newpk=<VERSION_BEFORE_1.1> sudo apt-mark hold newpk

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

dnf --showduplicates list newpk sudo dnf downgrade newpk-<VERSION_BEFORE_1.1> sudo dnf versionlock add newpk

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-2020-20189?

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

Is CVE-2020-20189 being exploited?

CVE-2020-20189 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-2020-20189 affect?

CVE-2020-20189 affects newpk. Severity is critical (CVSS 9.8). SQL Injection vulnerability in NewPK 1.1 via the title parameter to admin\newpost.php.

How urgent is CVE-2020-20189?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

← Back to latest CVEs