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Case File

CVE-2019-11763

MEDIUM · CVSS 6.1 EPSS 0.99%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-01-08 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.1. It affects Firefox.

CVE
CVE-2019-11763
Severity
MEDIUM
CVSS
6.1
EPSS
0.99%
Firefox

Original NVD Description

Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Related CVEs

Other vulnerabilities affecting the same vendor(s)