CVE-2006-2422: phpCOIN 1.2.3 and earlier stores messages based upon e-mail addresses, which allows remote authenticated users

Routine

MEDIUM 5.0DOWNGRADE

CVE-2006-2422 is a medium-severity flaw (CVSS 5.0) affecting phpcoin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

phpCOIN 1.2.3 and earlier stores messages based upon e-mail addresses, which allows remote authenticated users to read messages for other users by adding the sender's e-mail address as an "additional contact".

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2006-05-17
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: coinsoft technologies

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

Am I affected?

Timeline

2006-05-17 10:06 UTCPublished CVE record published
2026-06-16 22:24 UTCUpdated Record last modified

coinsoft technologies phpcoin DOWNGRADE

Affected: 1.2 · 1.2.1 · 1.2.1b · 1.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison phpcoin sudo apt install phpcoin=<VERSION_BEFORE_1.2> sudo apt-mark hold phpcoin

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

dnf --showduplicates list phpcoin sudo dnf downgrade phpcoin-<VERSION_BEFORE_1.2> sudo dnf versionlock add phpcoin

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-2006-2422?

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

Is CVE-2006-2422 being exploited?

CVE-2006-2422 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-2006-2422 affect?

CVE-2006-2422 affects phpcoin. Severity is medium (CVSS 5.0). phpCOIN 1.2.3 and earlier stores messages based upon e-mail addresses, which allows remote authenticated users to read messages for other users by adding the sender's e-mail address as an "additional contact".

How urgent is CVE-2006-2422?

Priority 36/100. No elevated risk signals yet.

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References

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