CVE-2026-8888

HighCVSS 7.5/10Last modified Jul 22, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jun 3, 2026
Last modified
Jul 22, 2026
NVD status
Analyzed

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CVE-2026-8888: High severity, CVSS 7.5 | Vulnix