React Router is a router for React. In versions 7.0.0 through 7.14.0 and 6.7.0 through 6.30.3, certain URLs passed to the redirect function can trigger an open redirect to an external domain due to path values starting with // being reinterpreted as protocol-relative URLs. The level of impact depends on the validation done by the application prior to returning the redirect. This does not impact applications using Declarative Mode (<BrowserRouter>). This is patched in versions 7.14.1 and 6.30.4.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21448-1 advisory.

    - CVE-2025-7783: form-data: unsafe `Math.random()` function is used to select a boundary value for     multipart       form-encoded data (bsc#1246822).
    - CVE-2026-12143: form-data: CRLF injection via unescaped multipart field names and filenames     (bsc#1272310).
    - CVE-2026-13149: brace-expansion: `expand()` function exhibits exponential-time complexity when     processing       non-expanding `{}` brace groups (bsc#1269927).
    - CVE-2026-13311: shell-quote: quadratic complexity in `parse()` function when processing specially     crafted strings       (bsc#1269359).
    - CVE-2026-13676: fast-uri: host-based policy bypass due to failure to canonicalize Unicode/IDN hostnames     for       HTTP-family URLs (bsc#1269595).
    - CVE-2026-27601: underscore: DoS via stack overflow due to missing depth limits in `_.flatten` and     `_.isEqual`       functions (bsc#1259169).
    - CVE-2026-40181: react-router: open redirect to an external domain due to path values starting with `//`     being       reinterpreted as protocol-relative URLs (bsc#1272311).
    - CVE-2026-49356: @babel/core: arbitrary file read via `sourceMappingURL` comment (bsc#1272317).
    - CVE-2026-53550: js-yaml: quadratic complexity in merge-key processing when processing a crafted YAML     document       (bsc#1268851).
    - CVE-2026-53632: launch-editor: NTLMv2 hash disclosure via UNC path handling on Windows (bsc#1272319).
    - CVE-2026-54466: websocket-driver: message corruption via abuse of protocol length headers (bsc#1272312).
    - CVE-2026-54490: websocket-driver: resource limit bypass via message compression (bsc#1272313).
    - CVE-2026-55602: http-proxy-middleware: Host-header-driven backend routing bypass via `router` host+path     substring       matching (bsc#1272318).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - React Router is a router for React. In versions 7.0.0 through 7.14.0 and 6.7.0 through 6.30.3, certain     URLs passed to the redirect function can trigger an open redirect to an external domain due to path values     starting with // being reinterpreted as protocol-relative URLs. The level of impact depends on the     validation done by the application prior to returning the redirect. This does not impact applications     using Declarative Mode (<BrowserRouter>). This is patched in versions 7.14.1 and 6.30.4. (CVE-2026-40181)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - React Router is a router for React. In versions 7.0.0 through 7.14.0 and 6.7.0 through 6.30.3, certain
    URLs passed to the redirect function can trigger an open redirect to an external domain due to path values
    starting with // being reinterpreted as protocol-relative URLs. The level of impact depends on the
    validation done by the application prior to returning the redirect. This does not impact applications
    using Declarative Mode (<BrowserRouter>). This is patched in versions 7.14.1 and 6.30.4. (CVE-2026-40181)

ID	Name	Product	Family	Type	Severity
330583	openSUSE 16 Security Update : agama-web-ui (openSUSE-SU-2026:21448-1)	Nessus	SuSE Local Security Checks	Local	critical
321658	Linux Distros Unpatched Vulnerability : CVE-2026-40181	Nessus	Misc.	Local	high
442612	SCA: security update for @remix-run/router, react-router (GHSA-2j2x-hqr9-3h42)	Tenable Cloud Security	SCA Checks	Local	high
442612	SCA: security update for @remix-run/router, react-router (GHSA-2j2x-hqr9-3h42)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-40181

high

Tenable Plugins

critical

high

high

high