How severe is CVE-2014-7831?

CVE-2014-7831 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2014-7831 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-7831?

CVE-2014-7831 primarily affects Moodle. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-7831?

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

When was CVE-2014-7831 published?

CVE-2014-7831 was published on 2014-11-24 and last updated on 2026-06-17.

CVE-2014-7831

CVE-2014-7831 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Moodle
Published: 2014-11-24
Last modified: 2026-06-17

Description

lib/classes/grades_external.php in Moodle 2.7.x before 2.7.3 does not consider the moodle/grade:viewhidden capability before displaying hidden grades, which allows remote authenticated users to obtain sensitive information by leveraging the student role to access the get_grades web service.

Frequently asked questions

What is CVE-2014-7831?: lib/classes/grades_external.php in Moodle 2.7.x before 2.7.3 does not consider the moodle/grade:viewhidden capability before displaying hidden grades, which allows remote authenticated users to obtain sensitive information by leveraging the student role to access the get_grades web service.
How severe is CVE-2014-7831?: CVE-2014-7831 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2014-7831 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-7831?: CVE-2014-7831 primarily affects Moodle. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-7831?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-7831 published?: CVE-2014-7831 was published on 2014-11-24 and last updated on 2026-06-17.

References

Affected products (19)

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.6:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.7:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.5.8:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.6.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.6.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.6.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.6.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.7.2:*:*:*:*:*:*:*

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