CVE-2025-61686 is a critical directory traversal vulnerability affecting React Router and Remix (specifically @react-router/node, @remix-run/deno, and @remix-run/node). An attacker can manipulate an unsigned cookie to force the session storage to read/write files outside the intended directory, potentially leading to data manipulation or denial of service. With a CVSS score of 9.1 (CRITICAL), this vulnerability has a low attack complexity and high impact on integrity and availability. While there is no known active exploitation or public exploit code, the vulnerability has garnered significant community discussion, indicating high awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 7.0.0, < 7.9.4CPE matchmatch criteria | cpe:2.3:a:shopify:react-router\/node:*:*:*:*:*:node.js:*:* | ||
< 2.17.2CPE matchmatch criteria | cpe:2.3:a:shopify:remix-run\/deno:*:*:*:*:*:node.js:*:* | ||
< 2.17.2CPE matchmatch criteria | cpe:2.3:a:shopify:remix-run\/node:*:*:*:*:*:node.js:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.