CVE-2006-2850: Cross-site scripting (XSS) vulnerability in recentchanges.php in PHP Labware LabWiki 1.0 and earlier allows re

Routine

MEDIUM 4.3DOWNGRADE

CVE-2006-2850 is a medium-severity flaw (CVSS 4.3) affecting labwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in recentchanges.php in PHP Labware LabWiki 1.0 and earlier allows remote attackers to inject arbitrary web script or HTML via the help parameter.

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	1.4% (top 29%)
CISA exploited list	No
Published	2006-06-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: php labware

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

Am I affected?

Timeline

2006-06-06 20:06 UTCPublished CVE record published
2026-06-16 22:25 UTCUpdated Record last modified

php labware labwiki DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison labwiki sudo apt install labwiki=<VERSION_BEFORE_1.0> sudo apt-mark hold labwiki

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

dnf --showduplicates list labwiki sudo dnf downgrade labwiki-<VERSION_BEFORE_1.0> sudo dnf versionlock add labwiki

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-2006-2850?

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

Is CVE-2006-2850 being exploited?

CVE-2006-2850 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-2006-2850 affect?

CVE-2006-2850 affects labwiki. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in recentchanges.php in PHP Labware LabWiki 1.0 and earlier allows remote attackers to inject arbitrary web script or HTML via the help parameter.

How urgent is CVE-2006-2850?

Priority 38/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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