CVE-2026-67550
Severity CVSS v4.0:
Pending analysis
Type:
CWE-125
Out-of-bounds Read
Publication date:
30/07/2026
Last modified:
30/07/2026
Description
re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior to 1.25.2, re2 validates lastIndex against the UTF-8 byte length of a subject but uses it as a UTF-16 code-unit offset in exec, test, match, replace, and split, allowing an attacker-influenced lastIndex on a non-ASCII subject to trigger an out-of-bounds heap read and an uncatchable process crash, with limited heap information disclosure in some cases. This issue is fixed in 1.25.2.
Impact
Base Score 3.x
5.70
Severity 3.x
MEDIUM