How severe is CVE-2013-4524?

CVE-2013-4524 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2013-4524 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4524?

CVE-2013-4524 primarily affects Moodle. In total, 118 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4524?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4524 published?

CVE-2013-4524 was published on 2013-11-26 and last updated on 2026-06-16.

CVE-2013-4524

CVE-2013-4524 is a medium-severity vulnerability in Moodle with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Moodle
Published: 2013-11-26
Last modified: 2026-06-16

Description

Directory traversal vulnerability in repository/filesystem/lib.php in Moodle through 2.2.11, 2.3.x before 2.3.10, 2.4.x before 2.4.7, and 2.5.x before 2.5.3 allows remote authenticated users to read arbitrary files via a .. (dot dot) in a path.

Frequently asked questions

What is CVE-2013-4524?: Directory traversal vulnerability in repository/filesystem/lib.php in Moodle through 2.2.11, 2.3.x before 2.3.10, 2.4.x before 2.4.7, and 2.5.x before 2.5.3 allows remote authenticated users to read arbitrary files via a .. (dot dot) in a path.
How severe is CVE-2013-4524?: CVE-2013-4524 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2013-4524 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4524?: CVE-2013-4524 primarily affects Moodle. In total, 118 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4524?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4524 published?: CVE-2013-4524 was published on 2013-11-26 and last updated on 2026-06-16.

References

Affected products (118)

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.3.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.4.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.0:beta:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.6:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.7:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.6.8:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.7.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.7.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.7.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.7.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.7.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.7.6:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.8.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.8.6:*:*:*:*:*:*:*

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