CVE-2011-5005: Unrestricted file upload vulnerability in QuiXplorer 2.3 and earlier allows remote attackers to execute arbitr

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HIGH 7.5UPGRADEDOWNGRADE

CVE-2011-5005 is a high-severity flaw (CVSS 7.5) affecting quixplorer, t3quixplorer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted file upload vulnerability in QuiXplorer 2.3 and earlier allows remote attackers to execute arbitrary code by uploading a file with an executable extension using the upload action to index.php, then accessing it via a direct request to the file in an unspecified directory.

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	3.8% (top 10%)
CISA exploited list	No
Published	2011-12-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: claudio klingler · mads brunn

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

Am I affected?

Timeline

2011-12-25 01:55 UTCPublished CVE record published
2026-06-16 23:35 UTCUpdated Record last modified

claudio klingler quixplorer UPGRADE

Affected: <= 2.3 · 1.0 · 1.1 · 1.2 · 1.4 · 1.5 · 1.6 · 2.0

Fixed in: newer than 2.3

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade quixplorer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

mads brunn t3quixplorer DOWNGRADE

Affected: 1.0.0 · 1.0.1 · 1.0.2 · 1.2.0 · 1.3.0 · 1.4.0 · 1.5.0 · 1.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy t3quixplorer || rpm -q t3quixplorer || t3quixplorer --version

2. No fixed release: DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison t3quixplorer sudo apt install t3quixplorer=<VERSION_BEFORE_1.0.0> sudo apt-mark hold t3quixplorer

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

dnf --showduplicates list t3quixplorer sudo dnf downgrade t3quixplorer-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add t3quixplorer

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: QuiXplorer 2.3 - Bugtraq Arbitrary File Upload

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-2011-5005?

quixplorer: upgrade to newer than 2.3; t3quixplorer: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-5005 being exploited?

CVE-2011-5005 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-2011-5005 affect?

CVE-2011-5005 affects quixplorer, t3quixplorer. Severity is high (CVSS 7.5). Unrestricted file upload vulnerability in QuiXplorer 2.3 and earlier allows remote attackers to execute arbitrary code by uploading a file with an executable extension using the upload action to index.php, then accessing it via a direct req

How urgent is CVE-2011-5005?

Priority 54/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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