CVE-2006-3986: PHP remote file inclusion vulnerability in index.php in Knusperleicht Newsletter 3.5 and earlier allows remote

Q: How do I fix CVE-2006-3986?

newsletter: upgrade to newer than 3.5. Exact commands for each OS are on this page.

Q: Is CVE-2006-3986 being exploited?

CVE-2006-3986 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-2006-3986 affect?

CVE-2006-3986 affects newsletter. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in index.php in Knusperleicht Newsletter 3.5 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the NL_PATH parameter.

Q: How urgent is CVE-2006-3986?

Priority 53/100. High severity; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2006-3986 is a high-severity flaw (CVSS 7.5) affecting newsletter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in index.php in Knusperleicht Newsletter 3.5 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the NL_PATH parameter.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.4% (top 11%)
CISA exploited list	No
Published	2006-08-05
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: knusperleicht

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

Am I affected?

Timeline

2006-08-05 00:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

knusperleicht newsletter UPGRADE

Affected: <= 3.5

Fixed in: newer than 3.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade newsletter

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: NewsLetter 3.5 - 'NL_PATH' Remote File Inclusion

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-2006-3986?

newsletter: upgrade to newer than 3.5. Exact commands for each OS are on this page.

Is CVE-2006-3986 being exploited?

CVE-2006-3986 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-2006-3986 affect?

CVE-2006-3986 affects newsletter. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in index.php in Knusperleicht Newsletter 3.5 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the NL_PATH parameter.

How urgent is CVE-2006-3986?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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