CVE-2005-2252: PhpAuction 2.5 allows remote attackers to bypass authentication and gain privileges as another user by setting

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HIGH 7.5DOWNGRADE

CVE-2005-2252 is a high-severity flaw (CVSS 7.5) affecting phpauction. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PhpAuction 2.5 allows remote attackers to bypass authentication and gain privileges as another user by setting the PHPAUCTION_RM_ID cookie to the user ID.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Published	2005-07-13
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: gianluca baldo

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

Am I affected?

Timeline

2005-07-13 04:00 UTCPublished CVE record published
2026-06-16 22:14 UTCUpdated Record last modified

gianluca baldo phpauction DOWNGRADE

Affected: 2.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.5 (Debian / Ubuntu)

apt-cache madison phpauction sudo apt install phpauction=<VERSION_BEFORE_2.5> sudo apt-mark hold phpauction

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

dnf --showduplicates list phpauction sudo dnf downgrade phpauction-<VERSION_BEFORE_2.5> sudo dnf versionlock add phpauction

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-2005-2252?

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

Is CVE-2005-2252 being exploited?

CVE-2005-2252 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-2005-2252 affect?

CVE-2005-2252 affects phpauction. Severity is high (CVSS 7.5). PhpAuction 2.5 allows remote attackers to bypass authentication and gain privileges as another user by setting the PHPAUCTION_RM_ID cookie to the user ID.

How urgent is CVE-2005-2252?

Priority 44/100. High severity

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References

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