CVE-2006-2268: SQL injection vulnerability in FlexCustomer 0.0.4 and earlier allows remote attackers to bypass authentication

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HIGH 7.5DOWNGRADE

CVE-2006-2268 is a high-severity flaw (CVSS 7.5) affecting flexcustomer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in FlexCustomer 0.0.4 and earlier allows remote attackers to bypass authentication and execute arbitrary SQL commands via the admin and ordinary user interface, probably involving the (1) checkuser and (2) checkpass parameters to (a) admin/index.php, and (3) username and (4) password parameters to (b) index.php. NOTE: it was later reported that 0.0.6 is also affected.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-89
Published	2006-05-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: flexcustomer

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2006-05-09 10:02 UTCPublished CVE record published
2026-06-16 22:24 UTCUpdated Record last modified

flexcustomer flexcustomer DOWNGRADE

Affected: 0.0.1 · 0.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.0.1 (Debian / Ubuntu)

apt-cache madison flexcustomer sudo apt install flexcustomer=<VERSION_BEFORE_0.0.1> sudo apt-mark hold flexcustomer

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

dnf --showduplicates list flexcustomer sudo dnf downgrade flexcustomer-<VERSION_BEFORE_0.0.1> sudo dnf versionlock add flexcustomer

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-2006-2268?

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

Is CVE-2006-2268 being exploited?

CVE-2006-2268 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-2006-2268 affect?

CVE-2006-2268 affects flexcustomer. Severity is high (CVSS 7.5). SQL injection vulnerability in FlexCustomer 0.0.4 and earlier allows remote attackers to bypass authentication and execute arbitrary SQL commands via the admin and ordinary user interface, probably involving the (1) checkuser and (2) checkp

How urgent is CVE-2006-2268?

Priority 52/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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