How severe is CVE-2020-35717?

CVE-2020-35717 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35717 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35717?

CVE-2020-35717 affects Electronjs Zonote. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35717?

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

When was CVE-2020-35717 published?

CVE-2020-35717 was published on 2021-01-01 and last updated on 2026-06-17.

CVE-2020-35717

CVE-2020-35717 is a critical-severity vulnerability in Electronjs Zonote with a CVSS 3.x base score of 9.0. 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: Critical (CVSS 3.x base score 9.0)
CVSS v2: 3.5
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Electronjs Zonote
Published: 2021-01-01
Last modified: 2026-06-17

Description

zonote through 0.4.0 allows XSS via a crafted note, with resultant Remote Code Execution (because nodeIntegration in webPreferences is true).

Frequently asked questions

What is CVE-2020-35717?: zonote through 0.4.0 allows XSS via a crafted note, with resultant Remote Code Execution (because nodeIntegration in webPreferences is true).
How severe is CVE-2020-35717?: CVE-2020-35717 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35717 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35717?: CVE-2020-35717 affects Electronjs Zonote. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35717?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-35717 published?: CVE-2020-35717 was published on 2021-01-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:electronjs:zonote:*:*:*:*:*:node.js:*:*

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