CVE-2026-8888
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.5epss 0.4%
from disclosure to weapon61 days
Published on NVDJun 3
1st PoC+61d
exploitation probability
0.4%top 64% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Securly · Securly Chrome Extensionpublic PoCs found — 1
githubgithub.com/George0Papasotiriou/CVE-2026-8888-Printer-Firmware-Unsigned-Update-via-HTTP★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://kb.cert.org/vuls/id/595768