CVE-2010-4407: Multiple cross-site scripting (XSS) vulnerabilities in index.php in AlGuest 1.1c-patched allow remote attacker

Routine

MEDIUM 4.3DOWNGRADE

CVE-2010-4407 is a medium-severity flaw (CVSS 4.3) affecting alguest. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in index.php in AlGuest 1.1c-patched allow remote attackers to inject arbitrary web script or HTML via the (1) nome (nickname), (2) messaggio (message), and (3) link (homepage) parameters.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-79
Published	2010-12-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: alberto pittoni

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

Am I affected?

Timeline

2010-12-06 13:37 UTCPublished CVE record published
2026-06-16 23:24 UTCUpdated Record last modified

alberto pittoni alguest DOWNGRADE

Affected: 1.1 c-patched

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison alguest sudo apt install alguest=<VERSION_BEFORE_1.1> sudo apt-mark hold alguest

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

dnf --showduplicates list alguest sudo dnf downgrade alguest-<VERSION_BEFORE_1.1> sudo dnf versionlock add alguest

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-2010-4407?

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

Is CVE-2010-4407 being exploited?

CVE-2010-4407 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-2010-4407 affect?

CVE-2010-4407 affects alguest. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in index.php in AlGuest 1.1c-patched allow remote attackers to inject arbitrary web script or HTML via the (1) nome (nickname), (2) messaggio (message), and (3) link (homepage) parameters.

How urgent is CVE-2010-4407?

Priority 36/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2002-0491 HIGH 10.0 DOWNGRADE admin.php in AlGuest 1.0 guestbook checks for the existence of the admin cookie to authenticate the AlGuest ad

References

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