How severe is CVE-2020-12827?

CVE-2020-12827 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2020-12827 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12827?

CVE-2020-12827 affects Mjml. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12827?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-12827 published?

CVE-2020-12827 was published on 2020-06-17 and last updated on 2026-06-17.

CVE-2020-12827

CVE-2020-12827 is a high-severity vulnerability in Mjml with a CVSS 3.x base score of 7.2. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.4
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Mjml
Published: 2020-06-17
Last modified: 2026-06-17

Description

MJML prior to 4.6.3 contains a path traversal vulnerability when processing the mj-include directive within an MJML document.

Frequently asked questions

What is CVE-2020-12827?: MJML prior to 4.6.3 contains a path traversal vulnerability when processing the mj-include directive within an MJML document.
How severe is CVE-2020-12827?: CVE-2020-12827 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2020-12827 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12827?: CVE-2020-12827 affects Mjml. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12827?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-12827 published?: CVE-2020-12827 was published on 2020-06-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mjml:mjml:*:*:*:*:*:*:*:*

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