CVE-2006-4551: Eval injection vulnerability in CHXO Feedsplitter 2006-01-21 allows remote attackers to execute arbitrary PHP

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HIGH 7.5DOWNGRADE

CVE-2006-4551 is a high-severity flaw (CVSS 7.5) affecting feedsplitter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Eval injection vulnerability in CHXO Feedsplitter 2006-01-21 allows remote attackers to execute arbitrary PHP code via (1) the file specified as the value of the format parameter, and possibly (2) the RSS feed.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Published	2006-09-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: chxo

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

Am I affected?

Timeline

2006-09-06 00:04 UTCPublished CVE record published
2026-06-16 22:29 UTCUpdated Record last modified

chxo feedsplitter DOWNGRADE

Affected: 2006-01-21

Fixed in: no fixed release known

Safe to downgrade to: a release before 2006-01-21

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2006-01-21 (Debian / Ubuntu)

apt-cache madison feedsplitter sudo apt install feedsplitter=<VERSION_BEFORE_2006-01-21> sudo apt-mark hold feedsplitter

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

dnf --showduplicates list feedsplitter sudo dnf downgrade feedsplitter-<VERSION_BEFORE_2006-01-21> sudo dnf versionlock add feedsplitter

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-2006-4551?

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

Is CVE-2006-4551 being exploited?

CVE-2006-4551 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-2006-4551 affect?

CVE-2006-4551 affects feedsplitter. Severity is high (CVSS 7.5). Eval injection vulnerability in CHXO Feedsplitter 2006-01-21 allows remote attackers to execute arbitrary PHP code via (1) the file specified as the value of the format parameter, and possibly (2) the RSS feed.

How urgent is CVE-2006-4551?

Priority 45/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-4552 MEDIUM 6.8 DOWNGRADE Cross-site scripting (XSS) vulnerability in CHXO Feedsplitter 2006-01-21 allows remote attackers to inject arb
CVE-2006-4550 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in CHXO Feedsplitter 2006-01-21 allows remote attackers to read arbitrary XM
CVE-2006-4549 MEDIUM 5.0 DOWNGRADE CHXO Feedsplitter 2006-01-21 allows remote attackers to read the source code of feedsplitter.php via the shows

References

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