CVE-2026-67550: Uhop Node-RE2

Medium severity, CVSS 5.7. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Uhop Node-RE2: before 1.25.2 (fixed in 1.25.2)

Published 2026-07-30. Last modified 2026-09-10.