React Router is a router for React. In versions 7.0.0 through 7.17.0, the manifest endpoint could be accessed via unauthenticated targeted requests that would put heavy load on the server and slow down response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). This issue has been fixed in version 7.18.0.

According to its self-reported version number, the Atlassian Jira application running on the remote host is prior to 10.3.24 or 10.4.x prior to 11.3.10. It is, therefore, affected by multiple vulnerabilities, including flaws in bundled third-party dependencies :

- A remote code execution vulnerability in the bundled lodash dependency. (CVE-2026-4800)

- A remote code execution vulnerability in the bundled @babel/traverse dependency. (CVE-2023-45133)

- Multiple denial of service vulnerabilities in the bundled node-tar dependency. (CVE-2026-59873, CVE-2026-59874, CVE-2026-59871)

- A broken authentication and session management vulnerability in Atlassian Jira. (CVE-2026-21582)

- A file inclusion vulnerability in the bundled rollup dependency. (CVE-2026-27606)

- An injection vulnerability in the bundled axios dependency. (CVE-2026-44494)

- Multiple denial of service vulnerabilities in the bundled Netty dependency. (CVE-2026-59901, CVE-2026-56745, CVE-2026-55833, CVE-2026-56819, CVE-2026-45416, CVE-2026-48043, CVE-2026-42587, CVE-2026-55831, CVE-2026-42583)

- A denial of service vulnerability in the bundled react-router dependency. (CVE-2026-55685)

- A remote code execution vulnerability in the bundled form-data dependency. (CVE-2026-12143)

- A server-side request forgery (SSRF) vulnerability in the bundled axios dependency. (CVE-2026-44492)

- A man-in-the-middle vulnerability in the bundled PostgreSQL JDBC Driver dependency. (CVE-2026-54291)

- Multiple information disclosure vulnerabilities in the bundled axios dependency. (CVE-2026-44487, CVE-2026-44486)

- An improper authorization vulnerability in the bundled Netty dependency. (CVE-2026-44249)

- A broken authentication and session management vulnerability in the bundled Spring Security dependency. (CVE-2026-47838)

- A server-side request forgery (SSRF) vulnerability in the bundled ip-address dependency. (CVE-2026-69192)

- A denial of service vulnerability in the bundled brace-expansion dependency. (CVE-2026-13149)

- An injection vulnerability in the bundled js-cookie dependency. (CVE-2026-46625)

- A man-in-the-middle vulnerability in the bundled Netty dependency. (CVE-2026-50010)

- A denial of service vulnerability in the bundled undici dependency. (CVE-2026-12151)

- An injection vulnerability in the bundled Apache Tomcat dependency. (CVE-2026-24734)

- A denial of service vulnerability in the bundled Spring Framework dependency. (CVE-2026-41842)

- A denial of service vulnerability in the bundled axios dependency. (CVE-2026-44488)

- A denial of service vulnerability in the bundled Micrometer dependency. (CVE-2026-40983)

- A cross-site scripting (XSS) vulnerability in the bundled Spring Framework dependency. (CVE-2026-41845)

Note that the scanner 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 7.17.0, the manifest endpoint could be     accessed via unauthenticated targeted requests that would put heavy load on the server and slow down     response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router     applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>).
    This issue has been fixed in version 7.18.0. (CVE-2026-55685)

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 7.17.0, the manifest endpoint could be
    accessed via unauthenticated targeted requests that would put heavy load on the server and slow down
    response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router
    applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>).
    This issue has been fixed in version 7.18.0. (CVE-2026-55685)

ID	Name	Product	Family	Type	Severity
115700	Atlassian Jira 10.4.x < 11.3.10 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	critical
115699	Atlassian Jira < 10.3.24 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	critical
331742	Linux Distros Unpatched Vulnerability : CVE-2026-55685	Nessus	Misc.	Local	high
445289	SCA: security update for react-router (GHSA-chx6-hx7r-mcp5)	Tenable Cloud Security	SCA Checks	Local	high
445289	SCA: security update for react-router (GHSA-chx6-hx7r-mcp5)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-55685

high

Tenable Plugins

critical

critical

high

high

high