CVE-2005-4239: Cross-site scripting (XSS) vulnerability in Search/DisplayResults.php in PHP JackKnife 2.21 and earlier allows

Q: How do I fix CVE-2005-4239?

php jackknife: upgrade to newer than 2.21. Exact commands for each OS are on this page.

Q: Is CVE-2005-4239 being exploited?

CVE-2005-4239 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2005-4239 affect?

CVE-2005-4239 affects php jackknife. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Search/DisplayResults.php in PHP JackKnife 2.21 and earlier allows remote attackers to inject arbitrary web script or HTML via URL-encoded values in the sKeywords parameter.

Q: How urgent is CVE-2005-4239?

Priority 40/100. Public exploit reference

This month

MEDIUM 4.3UPGRADE

CVE-2005-4239 is a medium-severity flaw (CVSS 4.3) affecting php jackknife. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Search/DisplayResults.php in PHP JackKnife 2.21 and earlier allows remote attackers to inject arbitrary web script or HTML via URL-encoded values in the sKeywords parameter.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Published	2005-12-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: php jackknife

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

Am I affected?

Timeline

2005-12-14 11:03 UTCPublished CVE record published
2026-06-16 22:18 UTCUpdated Record last modified

php jackknife php jackknife UPGRADE

Affected: <= 2.21

Fixed in: newer than 2.21

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy php-jackknife || rpm -q php-jackknife || php-jackknife --version

2. UPGRADE to newer than 2.21 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade php-jackknife

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade php-jackknife

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: PHP JackKnife 2.21 - Cross-Site Scripting

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-2005-4239?

php jackknife: upgrade to newer than 2.21. Exact commands for each OS are on this page.

Is CVE-2005-4239 being exploited?

CVE-2005-4239 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-2005-4239 affect?

CVE-2005-4239 affects php jackknife. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Search/DisplayResults.php in PHP JackKnife 2.21 and earlier allows remote attackers to inject arbitrary web script or HTML via URL-encoded values in the sKeywords parameter.

How urgent is CVE-2005-4239?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-3002 MEDIUM 5.0 DOWNGRADE PHP JackKnife (PHPJK) allows remote attackers to obtain sensitive information via (1) a request to index.php w
CVE-2007-3001 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in PHP JackKnife (PHPJK) allow remote attackers to inject
CVE-2007-3000 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in PHP JackKnife (PHPJK) allow remote attackers to execute arbitrary SQ

References

← Back to latest CVEs