CVE-2009-0108: PHPAuctions (aka PHPAuctionSystem) allows remote attackers to bypass authentication and gain administrative ac

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HIGH 7.5DOWNGRADE

CVE-2009-0108 is a high-severity flaw (CVSS 7.5) affecting phpauctions. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHPAuctions (aka PHPAuctionSystem) allows remote attackers to bypass authentication and gain administrative access via modified (1) PHPAUCTION_RM_ID, (2) PHPAUCTION_RM_NAME, (3) PHPAUCTION_RM_USERNAME, and (4) PHPAUCTION_RM_EMAIL cookies.

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	2.6% (top 15%)
CISA exploited list	No
Weakness	CWE-264
Published	2009-01-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: phpauctions

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

Am I affected?

Timeline

2009-01-09 18:30 UTCPublished CVE record published
2026-06-16 23:04 UTCUpdated Record last modified

phpauctions phpauctions DOWNGRADE

Affected: _nil_

Fixed in: no fixed release known

Safe to downgrade to: a release before _nil_

1. Check installed version

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

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

apt-cache madison phpauctions sudo apt install phpauctions=<VERSION_BEFORE__nil_> sudo apt-mark hold phpauctions

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

dnf --showduplicates list phpauctions sudo dnf downgrade phpauctions-<VERSION_BEFORE__nil_> sudo dnf versionlock add phpauctions

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: PHPAuctionSystem - Insecure Cookie Handling

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-2009-0108?

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

Is CVE-2009-0108 being exploited?

CVE-2009-0108 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-2009-0108 affect?

CVE-2009-0108 affects phpauctions. Severity is high (CVSS 7.5). PHPAuctions (aka PHPAuctionSystem) allows remote attackers to bypass authentication and gain administrative access via modified (1) PHPAUCTION_RM_ID, (2) PHPAUCTION_RM_NAME, (3) PHPAUCTION_RM_USERNAME, and (4) PHPAUCTION_RM_EMAIL cookies.

How urgent is CVE-2009-0108?

Priority 53/100. High severity; Public exploit reference

Related CVEs

CVE-2009-0107 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in profile.php in PHPAuctions (aka PHPAuctionSystem) allows remote at
CVE-2009-0106 HIGH 7.5 DOWNGRADE SQL injection vulnerability in profile.php in PHPAuctions (aka PHPAuctionSystem) allows remote attackers to ex
CVE-2008-6663 HIGH 7.5 MITIGATE SQL injection vulnerability in profile.php in PHPAuctions.info PHPAuctions (aka PHPAuctionSystem) allows remot

References

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