How severe is CVE-2009-0501?

CVE-2009-0501 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-0501 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0501?

CVE-2009-0501 primarily affects Moodle. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0501?

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

When was CVE-2009-0501 published?

CVE-2009-0501 was published on 2009-02-10 and last updated on 2026-06-16.

CVE-2009-0501

CVE-2009-0501 is a medium-severity vulnerability in Moodle with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Moodle
Published: 2009-02-10
Last modified: 2026-06-16

Description

Unspecified vulnerability in the Calendar export feature in Moodle 1.8 before 1.8.8 and 1.9 before 1.9.4 allows attackers to obtain sensitive information and conduct "brute force attacks on user accounts" via unknown vectors.

Frequently asked questions

What is CVE-2009-0501?: Unspecified vulnerability in the Calendar export feature in Moodle 1.8 before 1.8.8 and 1.9 before 1.9.4 allows attackers to obtain sensitive information and conduct "brute force attacks on user accounts" via unknown vectors.
How severe is CVE-2009-0501?: CVE-2009-0501 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-0501 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0501?: CVE-2009-0501 primarily affects Moodle. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0501?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0501 published?: CVE-2009-0501 was published on 2009-02-10 and last updated on 2026-06-16.

References

Affected products (10)

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:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.8.7:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.9.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:1.9.3:*:*:*:*:*:*:*

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