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.
References
History

Fri, 05 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Securly
Securly securly Chrome Extension
Vendors & Products Securly
Securly securly Chrome Extension

Thu, 04 Jun 2026 22:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Thu, 04 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1333
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 20:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Wed, 03 Jun 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title CVE-2026-8888
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-06-03T18:16:25.264Z

Updated: 2026-06-04T19:48:31.510Z

Reserved: 2026-05-18T20:40:05.298Z

Link: CVE-2026-8888

cve-icon Vulnrichment

Updated: 2026-06-04T19:48:09.767Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-06-03T19:16:39.807

Modified: 2026-06-04T20:16:58.967

Link: CVE-2026-8888

cve-icon Redhat

No data.