CVE-2020-37151: phpMyChat Plus 1.98 contains a SQL injection vulnerability in the deluser.php page through the pmc_username pa

This week

HIGH 8.2REMOTEDOWNGRADE

CVE-2020-37151 is a high-severity flaw (CVSS 8.2) affecting phpmychat-plus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

phpMyChat Plus 1.98 contains a SQL injection vulnerability in the deluser.php page through the pmc_username parameter that allows attackers to manipulate database queries. Attackers can exploit boolean-based, error-based, and time-based blind SQL injection techniques to extract sensitive database information by crafting malicious payloads in the username field.

Why this priority

High 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	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-02-05
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: ciprianmp

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

Am I affected?

Timeline

2026-02-05 16:15 UTCPublished CVE record published
2026-06-17 03:17 UTCUpdated Record last modified

ciprianmp phpmychat-plus DOWNGRADE

Affected: 1.98

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.98

1. Check installed version

apt-cache policy phpmychat-plus || rpm -q phpmychat-plus || phpmychat-plus --version

2. No fixed release: DOWNGRADE to a release before 1.98 (Debian / Ubuntu)

apt-cache madison phpmychat-plus sudo apt install phpmychat-plus=<VERSION_BEFORE_1.98> sudo apt-mark hold phpmychat-plus

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

dnf --showduplicates list phpmychat-plus sudo dnf downgrade phpmychat-plus-<VERSION_BEFORE_1.98> sudo dnf versionlock add phpmychat-plus

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-2020-37151?

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

Is CVE-2020-37151 being exploited?

CVE-2020-37151 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-2020-37151 affect?

CVE-2020-37151 affects phpmychat-plus. Severity is high (CVSS 8.2). phpMyChat Plus 1.98 contains a SQL injection vulnerability in the deluser.php page through the pmc_username parameter that allows attackers to manipulate database queries. Attackers can exploit boolean-based, error-based, and time-based bli

How urgent is CVE-2020-37151?

Priority 48/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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