How severe is CVE-2013-4320?

No CVSS score has been assigned to CVE-2013-4320 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2013-4320?

CVE-2013-4320 affects the following packages: typo3/cms-core (Packagist), typo3/cms-core (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2013-4320?

Update typo3/cms-core to 6.0.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2013-4320 is resolved across your whole dependency graph.

How do I detect CVE-2013-4320 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2013-4320 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2013-4320 actively exploited in the wild?

No public exploit code has been indexed for CVE-2013-4320 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2013-4320?

CVE-2013-4320 has an EPSS (Exploit Prediction Scoring System) score of 1.0%, placing it in the 62th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2013-4320?

CVE-2013-4320 is classified as CWE-264 (CWE-264). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2013-4320 published, and has it been updated?

CVE-2013-4320 was published on May 17, 2022 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2013-4320 — cms-core

CVE-2013-4320 is a CWE-264 vulnerability in typo3/cms-core. A fix is available for typo3/cms-core — see the affected versions and patch details below.

TYPO3 Improper Access Management in the File Abstraction Layer

Published

May 17, 2022

Updated

Nov 8, 2023

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.0%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs62th percentile — riskier than 62% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

2 pkgs affected

🐘typo3/cms-core🐘typo3/cms-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

The File Abstraction Layer (FAL) in TYPO3 6.0.x before 6.0.9 and 6.1.x before 6.1.4 does not properly check permissions, which allows remote authenticated users to create or read arbitrary files via a crafted URL.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`typo3/cms-core`	≥ 6.0&&< 6.0.9	6.0.9`composer require typo3/cms-core:^6.0.9`
🐘Packagist	`typo3/cms-core`	≥ 6.1&&< 6.1.4	6.1.4`composer require typo3/cms-core:^6.1.4`

Affected Products

1 product · 13 configurations

Application

typo3typo3

13 versions

6.06.0.16.0.26.0.36.0.46.0.56.0.66.0.76.0.86.16.1.16.1.2

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update typo3/cms-core to 6.0.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2013-4320 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

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