How severe is CVE-2017-2645?

CVE-2017-2645 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-2645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-2645?

CVE-2017-2645 primarily affects Moodle. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-2645?

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

When was CVE-2017-2645 published?

CVE-2017-2645 was published on 2017-03-26 and last updated on 2026-06-17.

CVE-2017-2645

CVE-2017-2645 is a medium-severity vulnerability in Moodle with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Moodle
Published: 2017-03-26
Last modified: 2026-06-17

Description

In Moodle 3.x, XSS can occur via attachments to evidence of prior learning.

Frequently asked questions

What is CVE-2017-2645?: In Moodle 3.x, XSS can occur via attachments to evidence of prior learning.
How severe is CVE-2017-2645?: CVE-2017-2645 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-2645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-2645?: CVE-2017-2645 primarily affects Moodle. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-2645?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-2645 published?: CVE-2017-2645 was published on 2017-03-26 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:a:moodle:moodle:3.1.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.1.0:beta:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.0:beta:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.0:rc3:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.0:rc4:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.0:rc5:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.1:*:*:*:*:*:*:*

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