Unrated severityNVD Advisory· Published Jul 31, 2026
Debian node-re2: re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior …
CVE-2026-67550
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.
Affected products
1Patches
Vulnerability mechanics
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