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Case File

CVE-2017-7843

HIGH · CVSS 7.5 EPSS 2.99%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-06-11 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It affects Firefox.

CVE
CVE-2017-7843
Severity
HIGH
CVSS
7.5
EPSS
2.99%
Firefox

Original NVD Description

When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting. This vulnerability affects Firefox ESR < 52.5.2 and Firefox < 57.0.1.

Related CVEs

Other vulnerabilities affecting the same vendor(s)