CVE-2004-2347: blog.cgi in Leif M

This week

HIGH 7.5DOWNGRADE

CVE-2004-2347 is a high-severity flaw (CVSS 7.5) affecting web blog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

blog.cgi in Leif M. Wright Web Blog 1.1 and 1.1.5 allows remote attackers to execute arbitrary commands via shell metacharacters such as '|' in the file parameter of ViewFile requests.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	9.9% (top 4%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: leif m. wright

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:09 UTCUpdated Record last modified

leif m. wright web blog DOWNGRADE

Affected: 1.1 · 1.1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy web-blog || rpm -q web-blog || web-blog --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison web-blog sudo apt install web-blog=<VERSION_BEFORE_1.1> sudo apt-mark hold web-blog

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

dnf --showduplicates list web-blog sudo dnf downgrade web-blog-<VERSION_BEFORE_1.1> sudo dnf versionlock add web-blog

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.

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: Leif M. Wright Web Blog 1.1 - Remote Command Execution

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-2004-2347?

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

Is CVE-2004-2347 being exploited?

CVE-2004-2347 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-2004-2347 affect?

CVE-2004-2347 affects web blog. Severity is high (CVSS 7.5). blog.cgi in Leif M. Wright Web Blog 1.1 and 1.1.5 allows remote attackers to execute arbitrary commands via shell metacharacters such as '|' in the file parameter of ViewFile requests.

How urgent is CVE-2004-2347?

Priority 55/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2006-0846 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in Leif M
CVE-2006-0845 MEDIUM 6.5 DOWNGRADE Leif M
CVE-2006-0844 HIGH 7.5 DOWNGRADE Leif M
CVE-2006-0843 MEDIUM 5.0 DOWNGRADE Leif M
CVE-2004-2127 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in Web Blog 1.1 allows remote attackers to read arbitrary files via a .

References

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