VULNERABILITY INTELLIGENCE

CVE-2026-8888

CVSS score7.5 HIGH
EPSS probability0.43%
CISA KEVNot currently listed
Published2026-06-03
Last modified2026-07-22
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-917
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-1333

Primary references