CVE-2026-8888

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.

PUBLISHED Reserved 2026-05-18 | Published 2026-06-03 | Updated 2026-06-04 | Assigner certcc

Problem types

CWE-1333

Product status

References

kb.cert.org/vuls/id/595768

cve.org (CVE-2026-8888)

nvd.nist.gov (CVE-2026-8888)

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