How severe is CVE-2011-4589?

CVE-2011-4589 has a CVSS 2.0 base score of 5.5, rated medium severity.

Is CVE-2011-4589 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4589?

CVE-2011-4589 primarily affects Moodle. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4589?

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

When was CVE-2011-4589 published?

CVE-2011-4589 was published on 2012-07-20 and last updated on 2026-06-16.

CVE-2011-4589

CVE-2011-4589 is a medium-severity vulnerability in Moodle with a CVSS 2.0 base score of 5.5. 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 5.5)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Moodle
Published: 2012-07-20
Last modified: 2026-06-16

Description

backup/moodle2/restore_stepslib.php in Moodle 2.0.x before 2.0.6 and 2.1.x before 2.1.3 does not check for the moodle/course:changeidnumber privilege during handling of course ID numbers, which allows remote authenticated users to overwrite ID numbers via a restore action.

Frequently asked questions

What is CVE-2011-4589?: backup/moodle2/restore_stepslib.php in Moodle 2.0.x before 2.0.6 and 2.1.x before 2.1.3 does not check for the moodle/course:changeidnumber privilege during handling of course ID numbers, which allows remote authenticated users to overwrite ID numbers via a restore action.
How severe is CVE-2011-4589?: CVE-2011-4589 has a CVSS 2.0 base score of 5.5, rated medium severity.
Is CVE-2011-4589 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4589?: CVE-2011-4589 primarily affects Moodle. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4589?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4589 published?: CVE-2011-4589 was published on 2012-07-20 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:a:moodle:moodle:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.2:*:*:*:*:*:*:*

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