Vulnerability Details CVE-2026-8888
Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as JavaScript regular expressions via new RegExp() without complexity validation. An on-path attacker can inject specific patterns to cause catastrophic backtracking, resulting in denial of service on all browsing.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.8%
CVSS Severity
CVSS v3 Score 7.5
References