What is CVE-2020-16608?

CVE-2020-16608 is a critical-severity vulnerability in Notable, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2020-12-10.

How severe is CVE-2020-16608?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2020-16608 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Notable

CVE-2020-16608

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

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-12-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.045 (91.2th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.043 · newest: 0.045 · change: +0.002

Affected products

Notable — versions 1.8.4

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

doyensec/awesome-electronjs-hacking

References

github.com/notable/notable (Third Party Advisory)
sghosh2402.medium.com/cve-2020-16608-8cdad9f4d9b4 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-16608?: CVE-2020-16608 is a critical-severity vulnerability in Notable, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2020-12-10.
How severe is CVE-2020-16608?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2020-16608 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.