CVE-2006-5239: Multiple cross-site scripting (XSS) vulnerabilities in eXpBlog 0.3.5 and earlier allow remote attackers to inj

Q: How do I fix CVE-2006-5239?

expblog: upgrade to newer than 0.3.5. Exact commands for each OS are on this page.

Q: Is CVE-2006-5239 being exploited?

CVE-2006-5239 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-2006-5239 affect?

CVE-2006-5239 affects expblog. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in eXpBlog 0.3.5 and earlier allow remote attackers to inject arbitrary web script or HTML via (1) the query string (PHP_SELF) in kalender.php or (2) the captcha_session_code parameter in

Q: How urgent is CVE-2006-5239?

Priority 40/100. Public exploit reference

This month

MEDIUM 4.3UPGRADE

CVE-2006-5239 is a medium-severity flaw (CVSS 4.3) affecting expblog. 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 eXpBlog 0.3.5 and earlier allow remote attackers to inject arbitrary web script or HTML via (1) the query string (PHP_SELF) in kalender.php or (2) the captcha_session_code parameter in pre_details.php.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-79
Published	2006-10-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: expblog

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

Am I affected?

Timeline

2006-10-12 00:07 UTCPublished CVE record published
2026-06-16 22:30 UTCUpdated Record last modified

expblog expblog UPGRADE

Affected: <= 0.3.5

Fixed in: newer than 0.3.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.3.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade expblog

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade expblog

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: EXPBlog 0.3.5 - Multiple Cross-Site Scripting Vulnerabilities

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-2006-5239?

expblog: upgrade to newer than 0.3.5. Exact commands for each OS are on this page.

Is CVE-2006-5239 being exploited?

CVE-2006-5239 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-2006-5239 affect?

CVE-2006-5239 affects expblog. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in eXpBlog 0.3.5 and earlier allow remote attackers to inject arbitrary web script or HTML via (1) the query string (PHP_SELF) in kalender.php or (2) the captcha_session_code parameter in

How urgent is CVE-2006-5239?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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