AUGUST 27, 2026
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Case File

CVE-2026-9309

MEDIUM · CVSS 5.4 EPSS 0.16%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-01 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.4. It affects Firefox, Java.

CVE
CVE-2026-9309
Severity
MEDIUM
CVSS
5.4
EPSS
0.16%
Firefox Java

Original NVD Description

Firefox for iOS Reader View did not properly escape HTML tags in JSON-LD metadata. A malicious page could inject markup that changed Reader View behavior and leaked sensitive URL parameters. These parameters could then be used to access internal pages, potentially resulting in arbitrary JavaScript execution in an internal origin. This vulnerability was fixed in Firefox for iOS 151.2.

Related CVEs

Other vulnerabilities affecting the same vendor(s)