CVE-2006-3772: PHP-Post 0.21 and 1.0, and possibly earlier versions, when auto-login is enabled, allows remote attackers to b

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MEDIUM 5.1DOWNGRADE

CVE-2006-3772 is a medium-severity flaw (CVSS 5.1) affecting php-post. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP-Post 0.21 and 1.0, and possibly earlier versions, when auto-login is enabled, allows remote attackers to bypass security restrictions and obtain administrative privileges by modifying the logincookie[user] setting in the login cookie.

Why this priority

EPSS top 3%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.1 (Medium)
EPSS exploit chance	16.8% (top 3%)
CISA exploited list	No
Published	2006-07-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: php-post

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

Am I affected?

Timeline

2006-07-24 12:19 UTCPublished CVE record published
2026-06-16 22:27 UTCUpdated Record last modified

php-post php-post DOWNGRADE

Affected: 0.21 · 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.21

1. Check installed version

apt-cache policy php-post || rpm -q php-post || php-post --version

2. No fixed release: DOWNGRADE to a release before 0.21 (Debian / Ubuntu)

apt-cache madison php-post sudo apt install php-post=<VERSION_BEFORE_0.21> sudo apt-mark hold php-post

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

dnf --showduplicates list php-post sudo dnf downgrade php-post-<VERSION_BEFORE_0.21> sudo dnf versionlock add php-post

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: PHP-Post 1.0 - Cookie Modification Privilege Escalation

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-2006-3772?

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

Is CVE-2006-3772 being exploited?

CVE-2006-3772 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-2006-3772 affect?

CVE-2006-3772 affects php-post. Severity is medium (CVSS 5.1). PHP-Post 0.21 and 1.0, and possibly earlier versions, when auto-login is enabled, allows remote attackers to bypass security restrictions and obtain administrative privileges by modifying the logincookie[user] setting in the login cookie.

How urgent is CVE-2006-3772?

Priority 47/100. EPSS top 3%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

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References

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