How severe is CVE-2020-16608?

CVE-2020-16608 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-16608 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16608?

CVE-2020-16608 affects Notable. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-16608?

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-2020-16608 published?

CVE-2020-16608 was published on 2020-12-10 and last updated on 2026-06-17.

CVE-2020-16608

CVE-2020-16608 is a critical-severity vulnerability in Notable with a CVSS 3.x base score of 9.6. 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 9.6)
CVSS v2: 9.3
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Notable
Published: 2020-12-10
Last modified: 2026-06-17

Description

Notable 1.8.4 allows XSS via crafted Markdown text, with resultant remote code execution (because nodeIntegration in webPreferences is true).

Frequently asked questions

What is CVE-2020-16608?: Notable 1.8.4 allows XSS via crafted Markdown text, with resultant remote code execution (because nodeIntegration in webPreferences is true).
How severe is CVE-2020-16608?: CVE-2020-16608 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-16608 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16608?: CVE-2020-16608 affects Notable. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-16608?: 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-2020-16608 published?: CVE-2020-16608 was published on 2020-12-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:notable:notable:1.8.4:*:*:*:*:*:*:*

More vulnerabilities in Notable

CVE-2022-26198 — Critical (CVSS 9.8): Notable v1.8.4 does not filter text editing, allowing attackers to execute arbitrary code via a crafted payload…
CVE-2022-29281 — High (CVSS 8.8): Notable before 1.9.0-beta.8 doesn't effectively prevent the opening of executable files when clicking on a link. There…

All CVEs affecting Notable →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →