How severe is CVE-2012-3387?

CVE-2012-3387 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2012-3387 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-3387?

CVE-2012-3387 affects Moodle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-3387?

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

When was CVE-2012-3387 published?

CVE-2012-3387 was published on 2012-07-23 and last updated on 2026-06-16.

CVE-2012-3387

CVE-2012-3387 is a medium-severity vulnerability in Moodle with a CVSS 2.0 base score of 4.0. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Moodle
Published: 2012-07-23
Last modified: 2026-06-16

Description

Moodle 2.3.x before 2.3.1 uses only a client-side check for whether references are permitted in a file upload, which allows remote authenticated users to bypass intended alias (aka shortcut) restrictions via a client that omits this check.

Frequently asked questions

What is CVE-2012-3387?: Moodle 2.3.x before 2.3.1 uses only a client-side check for whether references are permitted in a file upload, which allows remote authenticated users to bypass intended alias (aka shortcut) restrictions via a client that omits this check.
How severe is CVE-2012-3387?: CVE-2012-3387 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2012-3387 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-3387?: CVE-2012-3387 affects Moodle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-3387?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-3387 published?: CVE-2012-3387 was published on 2012-07-23 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:moodle:moodle:2.3.0:*:*:*:*:*:*:*

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