CVE-2006-4090: Cross-site scripting (XSS) vulnerability in Webligo BlogHoster 2.2 allows remote attackers to inject arbitrary

Routine

MEDIUM 4.3DOWNGRADE

CVE-2006-4090 is a medium-severity flaw (CVSS 4.3) affecting bloghoster. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Webligo BlogHoster 2.2 allows remote attackers to inject arbitrary web script or HTML via the "From: part of the comment post," probably involving the nickname parameter to previewcomment.php.

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	1.3% (top 29%)
CISA exploited list	No
Published	2006-08-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: webligo

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

Am I affected?

Timeline

2006-08-11 10:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

webligo bloghoster 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 bloghoster || rpm -q bloghoster || bloghoster --version

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

apt-cache madison bloghoster sudo apt install bloghoster=<VERSION_BEFORE_2.2> sudo apt-mark hold bloghoster

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

dnf --showduplicates list bloghoster sudo dnf downgrade bloghoster-<VERSION_BEFORE_2.2> sudo dnf versionlock add bloghoster

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-2006-4090?

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

Is CVE-2006-4090 being exploited?

CVE-2006-4090 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-2006-4090 affect?

CVE-2006-4090 affects bloghoster. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Webligo BlogHoster 2.2 allows remote attackers to inject arbitrary web script or HTML via the "From: part of the comment post," probably involving the nickname parameter to previewcomment.php.

How urgent is CVE-2006-4090?

Priority 33/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

References

← Back to latest CVEs