CVE-2006-4056: Multiple SQL injection vulnerabilities in the authentication process in katzlbt (a) The Address Book 1.04e and

Q: How do I fix CVE-2006-4056?

the address book: upgrade to newer than 1.04e; the address book reloaded: upgrade to newer than 2.0. Exact commands for each OS are on this page.

Q: Is CVE-2006-4056 being exploited?

CVE-2006-4056 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2006-4056 affect?

CVE-2006-4056 affects the address book, the address book reloaded. Severity is high (CVSS 7.5). Multiple SQL injection vulnerabilities in the authentication process in katzlbt (a) The Address Book 1.04e and earlier and (b) The Address Book Reloaded before 2.0-rc4 allow remote attackers to execute arbitrary SQL commands via the (1) use

This month

HIGH 7.5UPGRADEUPGRADE

CVE-2006-4056 is a high-severity flaw (CVSS 7.5) affecting the address book, the address book reloaded. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL injection vulnerabilities in the authentication process in katzlbt (a) The Address Book 1.04e and earlier and (b) The Address Book Reloaded before 2.0-rc4 allow remote attackers to execute arbitrary SQL commands via the (1) username or (2) password parameters. NOTE: portions of these details are obtained from third party information.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Published	2006-08-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: the address book · the address book reloaded

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

Am I affected?

Timeline

2006-08-10 00:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

the address book the address book UPGRADE

Affected: <= 1.04e

Fixed in: newer than 1.04e

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy the-address-book || rpm -q the-address-book || the-address-book --version

2. UPGRADE to newer than 1.04e (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade the-address-book

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade the-address-book

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

the address book reloaded the address book reloaded UPGRADE

Affected: <= 2.0

Fixed in: newer than 2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy the-address-book-reloaded || rpm -q the-address-book-reloaded || the-address-book-reloaded --version

2. UPGRADE to newer than 2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade the-address-book-reloaded

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade the-address-book-reloaded

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2006-4056?

the address book: upgrade to newer than 1.04e; the address book reloaded: upgrade to newer than 2.0. Exact commands for each OS are on this page.

Is CVE-2006-4056 being exploited?

CVE-2006-4056 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-2006-4056 affect?

CVE-2006-4056 affects the address book, the address book reloaded. Severity is high (CVSS 7.5). Multiple SQL injection vulnerabilities in the authentication process in katzlbt (a) The Address Book 1.04e and earlier and (b) The Address Book Reloaded before 2.0-rc4 allow remote attackers to execute arbitrary SQL commands via the (1) use

How urgent is CVE-2006-4056?

Priority 45/100. High severity

Related CVEs

CVE-2006-4582 MEDIUM 5.0 DOWNGRADE Cross-site request forgery (CSRF) vulnerability in The Address Book 1.04e allows remote attackers to perform u
CVE-2006-4581 MEDIUM 5.0 DOWNGRADE Unrestricted file upload vulnerability in The Address Book 1.04e validates the Content-Type header but not the
CVE-2006-4580 HIGH 7.5 DOWNGRADE register.php in The Address Book 1.04e allows remote attackers to bypass the "Allow User Self-Registration" se
CVE-2006-4579 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in users.php in The Address Book 1.04e allows remote attackers to include ar
CVE-2006-4578 HIGH 7.5 DOWNGRADE export.php in The Address Book 1.04e writes username and password hash information into a publicly accessible

References

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