CVE-2006-1954: SQL injection vulnerability in authent.php4 in Nicolas Fischer (aka NFec) RechnungsZentrale V2 1.1.3, and poss

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MEDIUM 5.0DOWNGRADE

CVE-2006-1954 is a medium-severity flaw (CVSS 5.0) affecting rechnungszentrale. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in authent.php4 in Nicolas Fischer (aka NFec) RechnungsZentrale V2 1.1.3, and possibly earlier versions, allows remote attackers to execute arbitrary SQL commands via the User field.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Published	2006-04-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: nfec.de

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

Am I affected?

Timeline

2006-04-21 10:02 UTCPublished CVE record published
2026-06-16 22:24 UTCUpdated Record last modified

nfec.de rechnungszentrale DOWNGRADE

Affected: v2_1.1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before v2_1.1.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before v2_1.1.3 (Debian / Ubuntu)

apt-cache madison rechnungszentrale sudo apt install rechnungszentrale=<VERSION_BEFORE_v2_1.1.3> sudo apt-mark hold rechnungszentrale

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

dnf --showduplicates list rechnungszentrale sudo dnf downgrade rechnungszentrale-<VERSION_BEFORE_v2_1.1.3> sudo dnf versionlock add rechnungszentrale

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: RechnungsZentrale 2 1.1.3 - 'Authent.php4' SQL Injection

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-2006-1954?

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

Is CVE-2006-1954 being exploited?

CVE-2006-1954 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-2006-1954 affect?

CVE-2006-1954 affects rechnungszentrale. Severity is medium (CVSS 5.0). SQL injection vulnerability in authent.php4 in Nicolas Fischer (aka NFec) RechnungsZentrale V2 1.1.3, and possibly earlier versions, allows remote attackers to execute arbitrary SQL commands via the User field.

How urgent is CVE-2006-1954?

Priority 42/100. Public exploit reference

Related CVEs

CVE-2006-1955 MEDIUM 5.0 DOWNGRADE PHP remote file inclusion vulnerability in authent.php4 in Nicolas Fischer (aka NFec) RechnungsZentrale V2 1.1

References

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