How severe is CVE-2019-14827?

CVE-2019-14827 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-2019-14827 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-14827?

CVE-2019-14827 affects Moodle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-14827?

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

When was CVE-2019-14827 published?

CVE-2019-14827 was published on 2021-05-17 and last updated on 2026-06-17.

CVE-2019-14827

CVE-2019-14827 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-94.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Moodle
Published: 2021-05-17
Last modified: 2026-06-17

Description

A vulnerability was found in Moodle where javaScript injection was possible in some Mustache templates via recursive rendering from contexts. Mustache helper tags that were included in template contexts were not being escaped before that context was injected into another Mustache helper, which could result in script injection in some templates. This affects versions 3.7 to 3.7.1, 3.6 to 3.6.5, 3.5 to 3.5.7 and earlier unsupported versions.

Frequently asked questions

What is CVE-2019-14827?: A vulnerability was found in Moodle where javaScript injection was possible in some Mustache templates via recursive rendering from contexts. Mustache helper tags that were included in template contexts were not being escaped before that context was injected into another Mustache helper, which could result in script injection in some templates. This affects versions 3.7 to 3.7.1, 3.6 to 3.6.5, 3.5 to 3.5.7 and earlier unsupported versions.
How severe is CVE-2019-14827?: CVE-2019-14827 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-2019-14827 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-14827?: CVE-2019-14827 affects Moodle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-14827?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-14827 published?: CVE-2019-14827 was published on 2021-05-17 and last updated on 2026-06-17.

References

Affected products (1)

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

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