PT-2026-66604 · Uhop · Node-Re2

CVE-2026-67550 · Published 2026-07-30 · Updated 2026-07-30

NVD

CVSS v3.1

5.7

Medium

Base vector

AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

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.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-67550

Affected Products

Node-Re2

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-67550 · Security Note
• https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj · Note
• https://github.com/uhop/node-re2/releases/tag/1.25.2 · Note
• https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d · Note