CVE-2006-6849: administration/index.php in Cahier de texte (CDT) 2.2 does not properly exit when authentication fails, which

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HIGH 7.5DOWNGRADE

CVE-2006-6849 is a high-severity flaw (CVSS 7.5) affecting cahier de textes. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

administration/index.php in Cahier de texte (CDT) 2.2 does not properly exit when authentication fails, which allows remote attackers to perform unauthorized administrative actions.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.6% (top 14%)
CISA exploited list	No
Published	2006-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cahier de textes

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

Am I affected?

Timeline

2006-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:33 UTCUpdated Record last modified

cahier de textes cahier de textes DOWNGRADE

Affected: 2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2

1. Check installed version

apt-cache policy cahier-de-textes || rpm -q cahier-de-textes || cahier-de-textes --version

2. No fixed release: DOWNGRADE to a release before 2.2 (Debian / Ubuntu)

apt-cache madison cahier-de-textes sudo apt install cahier-de-textes=<VERSION_BEFORE_2.2> sudo apt-mark hold cahier-de-textes

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

dnf --showduplicates list cahier-de-textes sudo dnf downgrade cahier-de-textes-<VERSION_BEFORE_2.2> sudo dnf versionlock add cahier-de-textes

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: Cahier de texte 2.2 - Bypass General Access Protection

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-2006-6849?

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

Is CVE-2006-6849 being exploited?

CVE-2006-6849 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-2006-6849 affect?

CVE-2006-6849 affects cahier de textes. Severity is high (CVSS 7.5). administration/index.php in Cahier de texte (CDT) 2.2 does not properly exit when authentication fails, which allows remote attackers to perform unauthorized administrative actions.

How urgent is CVE-2006-6849?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-6254 MEDIUM 4.3 UPGRADE administration/telecharger.php in Cahier de texte 2.0 allows remote attackers to obtain unparsed content (sour
CVE-2006-6253 MEDIUM 5.0 DOWNGRADE Cahier de texte 2.0 stores sensitive information under the web root, possibly with insufficient access control
CVE-2006-5221 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in Cahier de texte 2.0 allow remote attackers to execute arbitrary SQL

References

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