CVE-2006-7076: Cross-site scripting (XSS) vulnerability in guestbook.php in Advanced Guestbook 2.4 for phpBB allows remote at

Routine

MEDIUM 4.3DOWNGRADE

CVE-2006-7076 is a medium-severity flaw (CVSS 4.3) affecting phpbb advanced guestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in guestbook.php in Advanced Guestbook 2.4 for phpBB allows remote attackers to inject arbitrary web script or HTML via the entry parameter. NOTE: this issue might be resultant from SQL injection.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Published	2007-03-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: phpbb group

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

Am I affected?

Timeline

2007-03-02 21:18 UTCPublished CVE record published
2026-06-16 22:34 UTCUpdated Record last modified

phpbb group phpbb advanced guestbook DOWNGRADE

Affected: 2.4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.4.0 (Debian / Ubuntu)

apt-cache madison phpbb-advanced-guestbook sudo apt install phpbb-advanced-guestbook=<VERSION_BEFORE_2.4.0> sudo apt-mark hold phpbb-advanced-guestbook

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

dnf --showduplicates list phpbb-advanced-guestbook sudo dnf downgrade phpbb-advanced-guestbook-<VERSION_BEFORE_2.4.0> sudo dnf versionlock add phpbb-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.

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-2006-7076?

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

Is CVE-2006-7076 being exploited?

CVE-2006-7076 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-2006-7076 affect?

CVE-2006-7076 affects phpbb advanced guestbook. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in guestbook.php in Advanced Guestbook 2.4 for phpBB allows remote attackers to inject arbitrary web script or HTML via the entry parameter. NOTE: this issue might be resultant from SQL injection.

How urgent is CVE-2006-7076?

Priority 31/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-7077 MEDIUM 6.8 DOWNGRADE SQL injection vulnerability in guestbook.php in Advanced Guestbook 2.4 for phpBB allows remote attackers to ex
CVE-2006-2152 HIGH 7.5 UPGRADE PHP remote file inclusion vulnerability in admin/addentry.php in phpBB Advanced Guestbook 2.4.0 and earlier, w

References

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