Out-of-bounds Read Affecting node-re2 package, versions <1.26.1+~cs1.7.0-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-NODERE2-18485445
  • published31 Jul 2026
  • disclosed30 Jul 2026

Introduced: 30 Jul 2026

CVE-2026-67550  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Debian:unstable node-re2 to version 1.26.1+~cs1.7.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-re2 package and not the node-re2 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1