CVE-2026-55685: react-router from 7.0.0 (inclusive), before 7.18.0 (exclusive), >= 7.0.0, < 7.18.0

CVE-2026-55685. CVSS 3.1 base score 7.5 (HIGH, NVD). EPSS 0.00708 (percentile 0.52926), scored 22-Oct-2026.

Affected technology

react-router · from 7.0.0 (inclusive), before 7.18.0 (exclusive)
shopify

react-router · >= 7.0.0, < 7.18.0
remix-run

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 24-Oct-2026 15:08 UTC

CWE: CWE-400, CWE-407
CCR priority: 30.2 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · NVD
EPSS: 0.00708 · percentile 0.52993 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-55685.html