critical

CVE-2025-61686

react-router: React Router has Path Traversal in File Session Storage

Published 10 Jan 2026Modified 15 Jul 2026CWE 22

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Red Hat9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by GHSA, Red Hat.

Description

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage() is being used from @react-router/node (or @remix-run/node/@remix-run/deno in Remix v2) with an unsigned cookie, it is possible for an attacker to cause the session to try to read/write from a location outside the specified session file directory. The success of the attack would depend on the permissions of the web server process to access those files. Read files cannot be returned directly to the attacker. Session file reads would only succeed if the file matched the expected session file format. If the file matched the session file format, the data would be populated into the server side session but not directly returned to the attacker unless the application logic returned specific session information. This issue has been patched in @react-router/node version 7.9.4, @remix-run/deno version 2.17.2, and @remix-run/node version 2.17.2.

Affected packages and fixed versions

Source	Package	Fixed in
npm::GitHub Security Advisory npm	@react-router/node, @remix-run/deno, @remix-run/node	7.9.4 and 1 more

Show all 3 entries from 1 source

Source	Package	Fixed in
npm::GitHub Security Advisory npm	@react-router/node	7.9.4
npm::GitHub Security Advisory npm	@remix-run/deno	2.17.2
npm::GitHub Security Advisory npm	@remix-run/node	2.17.2

References

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