CVE-2008-2816: SQL injection vulnerability in post.php in Oxygen (aka O2PHP Bulletin Board) 2.0 allows remote attackers to ex

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HIGH 7.5DOWNGRADE

CVE-2008-2816 is a high-severity flaw (CVSS 7.5) affecting oxygen. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in post.php in Oxygen (aka O2PHP Bulletin Board) 2.0 allows remote attackers to execute arbitrary SQL commands via the repquote parameter in a reply action, a different vector than CVE-2006-1572.

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	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-89
Published	2008-06-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: o2php

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

Am I affected?

Timeline

2008-06-23 17:41 UTCPublished CVE record published
2026-06-16 22:54 UTCUpdated Record last modified

o2php oxygen DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison oxygen sudo apt install oxygen=<VERSION_BEFORE_2.0> sudo apt-mark hold oxygen

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

dnf --showduplicates list oxygen sudo dnf downgrade oxygen-<VERSION_BEFORE_2.0> sudo dnf versionlock add oxygen

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: Oxygen 2.0 - 'repquote' SQL Injection

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-2008-2816?

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

Is CVE-2008-2816 being exploited?

CVE-2008-2816 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-2008-2816 affect?

CVE-2008-2816 affects oxygen. Severity is high (CVSS 7.5). SQL injection vulnerability in post.php in Oxygen (aka O2PHP Bulletin Board) 2.0 allows remote attackers to execute arbitrary SQL commands via the repquote parameter in a reply action, a different vector than CVE-2006-1572.

How urgent is CVE-2008-2816?

Priority 47/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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CVE-2023-6938 MEDIUM 6.4 UPGRADE The Oxygen Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a custom field in all
CVE-2022-46841 MEDIUM 5.4 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in Soflyy Oxygen Builder plugin <= 4.4 versions.
CVE-2006-6280 HIGH 7.5 UPGRADE SQL injection vulnerability in viewthread.php in Oxygen (O2PHP Bulletin Board) 1.1.3 and earlier allows remote
CVE-2006-1572 MEDIUM 5.0 DOWNGRADE SQL injection vulnerability in post.php in Oxygen 1.1.3 allows remote attackers to execute arbitrary SQL comma

References

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