CVE-2006-3940: Multiple SQL injection vulnerabilities in phpbb-Auction allow remote attackers to execute arbitrary SQL comman

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HIGH 7.5DOWNGRADE

CVE-2006-3940 is a high-severity flaw (CVSS 7.5) affecting phpbb-auction. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL injection vulnerabilities in phpbb-Auction allow remote attackers to execute arbitrary SQL commands via (1) the ar parameter in auction_room.php and (2) the u parameter in auction_store.php. NOTE: the auction_rating.php vector is already covered by CVE-2005-1234. NOTE: the original disclosure states that the product name is "PHP-Auction", but this is probably an error.

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 33%)
CISA exploited list	No
Published	2006-07-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: phpbb group

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

Am I affected?

Timeline

2006-07-31 22:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

phpbb group phpbb-auction DOWNGRADE

Affected: 1.0m · 1.2m · 1.3m

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0m

1. Check installed version

apt-cache policy phpbb-auction || rpm -q phpbb-auction || phpbb-auction --version

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

apt-cache madison phpbb-auction sudo apt install phpbb-auction=<VERSION_BEFORE_1.0m> sudo apt-mark hold phpbb-auction

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

dnf --showduplicates list phpbb-auction sudo dnf downgrade phpbb-auction-<VERSION_BEFORE_1.0m> sudo dnf versionlock add phpbb-auction

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: phpBB-Auction 1.x - 'auction_room.php?ar' SQL Injection
Exploit-DB: phpBB-Auction 1.x - 'auction_store.php?u' 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-2006-3940?

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

Is CVE-2006-3940 being exploited?

CVE-2006-3940 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-2006-3940 affect?

CVE-2006-3940 affects phpbb-auction. Severity is high (CVSS 7.5). Multiple SQL injection vulnerabilities in phpbb-Auction allow remote attackers to execute arbitrary SQL commands via (1) the ar parameter in auction_room.php and (2) the u parameter in auction_store.php. NOTE: the auction_rating.php vector

How urgent is CVE-2006-3940?

Priority 48/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-2245 MEDIUM 6.8 DOWNGRADE PHP remote file inclusion vulnerability in auction\auction_common.php in Auction mod 1.3m for phpBB allows rem
CVE-2005-1235 MEDIUM 5.0 DOWNGRADE auction_my_auctions.php in phpbb-Auction 1.2m and earlier allows remote attackers to obtain sensitive informat
CVE-2005-1234 MEDIUM 5.0 DOWNGRADE Multiple SQL injection vulnerabilities in phpbb-Auction allow remote attackers to execute arbitrary SQL comman

References

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