CVE-2026-67550

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 v3 5.7 MEDIUM

5.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.4 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d
https://github.com/uhop/node-re2/releases/tag/1.25.2
https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj
https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-30 20:18

Updated : 2026-09-10 20:30

NVD link : CVE-2026-67550

Mitre link : CVE-2026-67550

CVE.ORG link : CVE-2026-67550

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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