CVE-2008-6645: Cross-site scripting (XSS) vulnerability in Opencosmo VisualSentinel 0.7 allows remote attackers to inject arb

Routine

MEDIUM 4.3DOWNGRADE

CVE-2008-6645 is a medium-severity flaw (CVSS 4.3) affecting visualsentinel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Opencosmo VisualSentinel 0.7 allows remote attackers to inject arbitrary web script or HTML via the User-Agent header ($_SERVER ['HTTP_USER_AGENT']), which is not properly handled when displaying log files.

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
Weakness	CWE-79
Published	2009-04-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: opencosmo

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

Am I affected?

Timeline

2009-04-07 14:17 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

opencosmo visualsentinel DOWNGRADE

Affected: 0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.7 (Debian / Ubuntu)

apt-cache madison visualsentinel sudo apt install visualsentinel=<VERSION_BEFORE_0.7> sudo apt-mark hold visualsentinel

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

dnf --showduplicates list visualsentinel sudo dnf downgrade visualsentinel-<VERSION_BEFORE_0.7> sudo dnf versionlock add visualsentinel

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-2008-6645?

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

Is CVE-2008-6645 being exploited?

CVE-2008-6645 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-2008-6645 affect?

CVE-2008-6645 affects visualsentinel. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Opencosmo VisualSentinel 0.7 allows remote attackers to inject arbitrary web script or HTML via the User-Agent header ($_SERVER ['HTTP_USER_AGENT']), which is not properly handled when displaying

How urgent is CVE-2008-6645?

Priority 31/100. No elevated risk signals yet.

References

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