How severe is CVE-2013-1833?

CVE-2013-1833 has a CVSS 2.0 base score of 3.5, rated low severity.

Is CVE-2013-1833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-1833?

CVE-2013-1833 primarily affects Moodle. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-1833?

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

When was CVE-2013-1833 published?

CVE-2013-1833 was published on 2013-03-25 and last updated on 2026-06-16.

CVE-2013-1833

CVE-2013-1833 is a low-severity vulnerability in Moodle with a CVSS 2.0 base score of 3.5. 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-79.

Key facts

Severity: Low (CVSS 2.0 base score 3.5)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Moodle
Published: 2013-03-25
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in the File Picker module in Moodle 2.x through 2.1.10, 2.2.x before 2.2.8, 2.3.x before 2.3.5, and 2.4.x before 2.4.2 allow remote authenticated users to inject arbitrary web script or HTML via a crafted filename.

Frequently asked questions

What is CVE-2013-1833?: Multiple cross-site scripting (XSS) vulnerabilities in the File Picker module in Moodle 2.x through 2.1.10, 2.2.x before 2.2.8, 2.3.x before 2.3.5, and 2.4.x before 2.4.2 allow remote authenticated users to inject arbitrary web script or HTML via a crafted filename.
How severe is CVE-2013-1833?: CVE-2013-1833 has a CVSS 2.0 base score of 3.5, rated low severity.
Is CVE-2013-1833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-1833?: CVE-2013-1833 primarily affects Moodle. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-1833?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-1833 published?: CVE-2013-1833 was published on 2013-03-25 and last updated on 2026-06-16.

References

Affected products (36)

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:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.7:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.8:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.0.9:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.6:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.7:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.8:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.9:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.1.10:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.2.7:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.3.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.3.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.3.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.3.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.4.1:*:*:*:*:*:*:*

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