🛡️ CVE-2026-67550 on Debian — node-re2

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-67550 as tracked by Debian, for the package node-re2. The fix is available in version 1.26.1+~cs1.7.0-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability high.

Weakness class

DEBIAN-CVE-2026-67550 is classified as CWE-125: Out-of-bounds Read. The code reads past the limits of a buffer, exposing adjacent memory contents or crashing the process.

Affected software

DEBIAN-CVE-2026-67550 is recorded against 1 package.

node-re2 (fixed in 1.26.1+~cs1.7.0-1)

Timeline and source

Published on 30 July 2026 and last revised on 15 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-30

Updated 2026-08-20

Modified 2026-08-15

Fix URL N/A

Affected Packages

Software	From version	Fixed in
node-re2	—	1.26.1+~cs1.7.0-1

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2026-67550

🔗 NVD 🔗 Mitre

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