CVE-2011-4334: edit.php in LabWiki 1.1 and earlier does not properly verify uploaded user files, which allows remote authenti

Q: How do I fix CVE-2011-4334?

labwiki: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2011-4334 being exploited?

CVE-2011-4334 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-2011-4334 affect?

CVE-2011-4334 affects labwiki. Severity is high (CVSS 8.8). edit.php in LabWiki 1.1 and earlier does not properly verify uploaded user files, which allows remote authenticated users to upload arbitrary PHP files via a PHP file with a .gif extension in the userfile parameter.

Q: How urgent is CVE-2011-4334?

Priority 59/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2011-4334 is a high-severity flaw (CVSS 8.8) affecting labwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

edit.php in LabWiki 1.1 and earlier does not properly verify uploaded user files, which allows remote authenticated users to upload arbitrary PHP files via a PHP file with a .gif extension in the userfile parameter.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	5.8% (top 7%)
CISA exploited list	No
Weakness	CWE-434
Published	2017-10-23
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: labwiki project

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

Am I affected?

Timeline

2017-10-23 18:29 UTCPublished CVE record published
2026-06-16 23:34 UTCUpdated Record last modified

labwiki project labwiki UPGRADE

Affected: <= 1.1

Fixed in: newer than 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade labwiki

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: labwiki 1.1 - Multiple 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-2011-4334?

labwiki: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Is CVE-2011-4334 being exploited?

CVE-2011-4334 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-2011-4334 affect?

CVE-2011-4334 affects labwiki. Severity is high (CVSS 8.8). edit.php in LabWiki 1.1 and earlier does not properly verify uploaded user files, which allows remote authenticated users to upload arbitrary PHP files via a PHP file with a .gif extension in the userfile parameter.

How urgent is CVE-2011-4334?

Priority 59/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2011-4333 MEDIUM 6.1 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in LabWiki 1.1 and earlier allow remote attackers to injec

References

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