How severe is CVE-2020-37256?

CVE-2020-37256 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-37256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-37256?

CVE-2020-37256 affects Getgrav Grav. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-37256?

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

Does CVE-2020-37256 have an EU (EUVD) identifier?

Yes. CVE-2020-37256 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-31260.

When was CVE-2020-37256 published?

CVE-2020-37256 was published on 2026-06-25 and last updated on 2026-06-27.

CVE-2020-37256

CVE-2020-37256 is a medium-severity vulnerability in Getgrav Grav with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-31260
Weakness: CWE-79
Affected product: Getgrav Grav
Published: 2026-06-25
Last modified: 2026-06-27

Description

Grav before 1.6.30 contains a cross-site scripting vulnerability in the Admin plugin page editor default security configuration. Privileged users with page editing capabilities can inject malicious scripts to execute arbitrary code and install malicious plugins for system access.

Frequently asked questions

What is CVE-2020-37256?: Grav before 1.6.30 contains a cross-site scripting vulnerability in the Admin plugin page editor default security configuration. Privileged users with page editing capabilities can inject malicious scripts to execute arbitrary code and install malicious plugins for system access.
How severe is CVE-2020-37256?: CVE-2020-37256 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-37256 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-37256?: CVE-2020-37256 affects Getgrav Grav. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-37256?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2020-37256 have an EU (EUVD) identifier?: Yes. CVE-2020-37256 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-31260.
When was CVE-2020-37256 published?: CVE-2020-37256 was published on 2026-06-25 and last updated on 2026-06-27.

References

Affected products (1)

cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*

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