How severe is CVE-2020-28470?

CVE-2020-28470 has a CVSS 3.x base score of 7.3, 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 low, and availability low.

Is CVE-2020-28470 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28470?

CVE-2020-28470 affects Scully. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28470?

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-2020-28470 published?

CVE-2020-28470 was published on 2021-01-14 and last updated on 2026-06-17.

CVE-2020-28470

CVE-2020-28470 is a high-severity vulnerability in Scully with a CVSS 3.x base score of 7.3. 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: High (CVSS 3.x base score 7.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Scully
Published: 2021-01-14
Last modified: 2026-06-17

Description

This affects the package @scullyio/scully before 1.0.9. The transfer state is serialised with the JSON.stringify() function and then written into the HTML page.

Frequently asked questions

What is CVE-2020-28470?: This affects the package @scullyio/scully before 1.0.9. The transfer state is serialised with the JSON.stringify() function and then written into the HTML page.
How severe is CVE-2020-28470?: CVE-2020-28470 has a CVSS 3.x base score of 7.3, 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 low, and availability low.
Is CVE-2020-28470 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28470?: CVE-2020-28470 affects Scully. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28470?: 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-2020-28470 published?: CVE-2020-28470 was published on 2021-01-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:scully:scully:*:*:*:*:*:*:*:*

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