What is CVE-2026-48202?

CVE-2026-48202 is a medium-severity vulnerability in Brave, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.3/10. Published 2026-10-29.

How severe is CVE-2026-48202?

Medium severity. CVSS v3 base score is 5.3 out of 10.

XSS in Brave

CVE-2026-48202

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Brave Brave brave-popup-builder allows Code Injection.This issue affects Brave: from n/a through 0.8.8.

Published 2026-10-29 · last modified 2026-10-29.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Brave

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

patchstack.com/database/wordpress/plugin/brave-popup-builder/vulnerability/word… (vdb-entry)

Frequently asked questions

What is CVE-2026-48202?: CVE-2026-48202 is a medium-severity vulnerability in Brave, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 5.3/10. Published 2026-10-29.
How severe is CVE-2026-48202?: Medium severity. CVSS v3 base score is 5.3 out of 10.