How severe is CVE-2020-25628?

CVE-2020-25628 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-2020-25628 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25628?

CVE-2020-25628 affects Moodle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25628?

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

When was CVE-2020-25628 published?

CVE-2020-25628 was published on 2020-12-08 and last updated on 2026-06-17.

CVE-2020-25628

CVE-2020-25628 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% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Moodle
Published: 2020-12-08
Last modified: 2026-06-17

Description

The filter in the tag manager required extra sanitizing to prevent a reflected XSS risk. This affects 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. Fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.

Frequently asked questions

What is CVE-2020-25628?: The filter in the tag manager required extra sanitizing to prevent a reflected XSS risk. This affects 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. Fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.
How severe is CVE-2020-25628?: CVE-2020-25628 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-2020-25628 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25628?: CVE-2020-25628 affects Moodle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25628?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-25628 published?: CVE-2020-25628 was published on 2020-12-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

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