Microsoft Internet Explorer 7 allows remote attackers to cause a denial of service (browser hang) via JavaScript that matches a regular expression against a long string, as demonstrated using /(.)*/.
http://www.securityfocus.com/archive/1/466175/100/0/threaded
http://www.securityfocus.com/archive/1/466043/100/0/threaded
http://www.securityfocus.com/archive/1/466017/100/0/threaded
https://exchange.xforce.ibmcloud.com/vulnerabilities/33715
Source: Mitre, NVD
Published: 2007-04-22
Updated: 2026-06-16
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS: 0.12278