CVE-2007-0609: Directory traversal vulnerability in Advanced Guestbook 2.4.2 allows remote attackers to bypass .htaccess sett

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MEDIUM 5.1DOWNGRADE

CVE-2007-0609 is a medium-severity flaw (CVSS 5.1) affecting advanced guestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in Advanced Guestbook 2.4.2 allows remote attackers to bypass .htaccess settings, and execute arbitrary PHP local files or read arbitrary local templates, via a .. (dot dot) in a lang cookie, followed by a filename without its .php extension, as demonstrated via a request to index.php.

Why this priority

EPSS top 6%: 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	7.5% (top 6%)
CISA exploited list	No
Published	2007-05-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: advanced guestbook

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

Am I affected?

Timeline

2007-05-09 17:19 UTCPublished CVE record published
2026-06-16 22:35 UTCUpdated Record last modified

advanced guestbook advanced guestbook DOWNGRADE

Affected: 2.4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.2

1. Check installed version

apt-cache policy advanced-guestbook || rpm -q advanced-guestbook || advanced-guestbook --version

2. No fixed release: DOWNGRADE to a release before 2.4.2 (Debian / Ubuntu)

apt-cache madison advanced-guestbook sudo apt install advanced-guestbook=<VERSION_BEFORE_2.4.2> sudo apt-mark hold advanced-guestbook

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

dnf --showduplicates list advanced-guestbook sudo dnf downgrade advanced-guestbook-<VERSION_BEFORE_2.4.2> sudo dnf versionlock add advanced-guestbook

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: Advanced Guestbook 2.4.2 - 'Lang' Cookie Local File Inclusion

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-2007-0609?

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

Is CVE-2007-0609 being exploited?

CVE-2007-0609 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-2007-0609 affect?

CVE-2007-0609 affects advanced guestbook. Severity is medium (CVSS 5.1). Directory traversal vulnerability in Advanced Guestbook 2.4.2 allows remote attackers to bypass .htaccess settings, and execute arbitrary PHP local files or read arbitrary local templates, via a .. (dot dot) in a lang cookie, followed by a

How urgent is CVE-2007-0609?

Priority 46/100. EPSS top 6%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-0608 HIGH 7.1 DOWNGRADE Advanced Guestbook 2.4.2 allows remote attackers to obtain sensitive information via an invalid (1) GB_TBL par
CVE-2007-0605 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in picture.php in Advanced Guestbook 2.4.2 allows remote attackers to
CVE-2007-0530 HIGH 7.5 DOWNGRADE Multiple PHP remote file inclusion vulnerabilities in Advanced Guestbook 2.4.2 allow remote attackers to execu
CVE-2006-5804 HIGH 7.5 DOWNGRADE PHP remote file inclusion vulnerability in admin.php in Advanced Guestbook 2.3.1 allows remote attackers to ex
CVE-2005-4649 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in Advanced Guestbook 2.2 and 2.3.1 allow remote attackers

References

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