CVE-2008-6312: SQL injection vulnerability in index.php in ProQuiz 1.0 allows remote attackers to execute arbitrary SQL comma

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HIGH 7.5DOWNGRADE

CVE-2008-6312 is a high-severity flaw (CVSS 7.5) affecting proquiz. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in index.php in ProQuiz 1.0 allows remote attackers to execute arbitrary SQL commands via the username parameter.

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	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-89
Published	2009-02-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: manzovi

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

Am I affected?

Timeline

2009-02-27 11:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

manzovi proquiz 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 proquiz || rpm -q proquiz || proquiz --version

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

apt-cache madison proquiz sudo apt install proquiz=<VERSION_BEFORE_1.0> sudo apt-mark hold proquiz

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

dnf --showduplicates list proquiz sudo dnf downgrade proquiz-<VERSION_BEFORE_1.0> sudo dnf versionlock add proquiz

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: ProQuiz 1.0 - Authentication Bypass

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-2008-6312?

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

Is CVE-2008-6312 being exploited?

CVE-2008-6312 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-2008-6312 affect?

CVE-2008-6312 affects proquiz. Severity is high (CVSS 7.5). SQL injection vulnerability in index.php in ProQuiz 1.0 allows remote attackers to execute arbitrary SQL commands via the username parameter.

How urgent is CVE-2008-6312?

Priority 48/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-6327 HIGH 7.5 DOWNGRADE SQL injection vulnerability in index.php in ProQuiz 1.0 allows remote attackers to execute arbitrary SQL comma

References

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