How severe is CVE-2020-11056?

CVE-2020-11056 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-11056 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-2020-11056?

CVE-2020-11056 affects Barrelstrengthdesign Sprout Forms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11056?

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-2020-11056 published?

CVE-2020-11056 was published on 2020-05-07 and last updated on 2026-06-17.

CVE-2020-11056

CVE-2020-11056 is a high-severity vulnerability in Barrelstrengthdesign Sprout Forms with a CVSS 3.x base score of 7.4. 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-74.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 6.5
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Barrelstrengthdesign Sprout Forms
Published: 2020-05-07
Last modified: 2026-06-17

Description

In Sprout Forms before 3.9.0, there is a potential Server-Side Template Injection vulnerability when using custom fields in Notification Emails which could lead to the execution of Twig code. This has been fixed in 3.9.0.

Frequently asked questions

What is CVE-2020-11056?: In Sprout Forms before 3.9.0, there is a potential Server-Side Template Injection vulnerability when using custom fields in Notification Emails which could lead to the execution of Twig code. This has been fixed in 3.9.0.
How severe is CVE-2020-11056?: CVE-2020-11056 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-11056 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-2020-11056?: CVE-2020-11056 affects Barrelstrengthdesign Sprout Forms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11056?: 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-2020-11056 published?: CVE-2020-11056 was published on 2020-05-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:barrelstrengthdesign:sprout_forms:*:*:*:*:*:*:*:*

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