{"id":"CVE-2025-27098","aliases":["GHSA-j2wh-wrv3-4x4g"],"url":"https://o3.security/vulnerability/CVE-2025-27098","summary":"Unwanted access to the entire file system vulnerability due to a missing check in `staticFiles` HTTP handler in graphql-mesh","details":"### Summary\nMissing check vulnerability in the static file handler allows any client to access the files in the server's file system\n\n### Details\nWhen `staticFiles` is set in the `serve` settings in the configuration file, the following handler doesn't check if `absolutePath` is still under the directory provided as `staticFiles`;\n\n```ts\n  if (staticFiles) {\n    router.get('/:relativePath+', async request => {\n      let { relativePath } = request.params;\n      if (!relativePath) {\n        relativePath = 'index.html';\n      }\n      const absolutePath = path.join(baseDir, staticFiles, relativePath);\n      if (absolutePath.includes(staticFiles) && (await pathExists(absolutePath))) {\n        const readStream = fs.createReadStream(absolutePath);\n        return new Response(readStream as any, {\n          status: 200,\n        });\n      }\n      return undefined;\n    });\n ```\n\n### Example scenario\nTo reproduce it, set `staticFiles` to the relative path of a directory in `.meshrc.yml`;\n\n```yml\nserve:\n   staticFiles: ./public\n```\n\nThen start the server with `mesh dev`, and browse to `/..%2fpackage.json` then you will see the content of `package.json`. You can even go deeper to see sensitive data; `/..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fetc/passwd`\n\n### Impact and solution\nIf `staticFiles` is set under `serve` in the configuration file. you have two options to fix vulnerability;\n\n- Update `@graphql-mesh/cli` to a version higher than `0.82.21`, and if you use `@graphql-mesh/http`, update it to a version higher than `0.3.18`\n- Remove `staticFiles` option from the configuration, and use other solutions to serve static files.\n\n### Credits\nThanks [alanwillms@gmail.com](mailto:alanwillms@gmail.com) for reporting this vulnerability with details","published":"2025-02-20T20:13:01.242Z","modified":"2026-08-12T03:51:19.322024866Z","cvss":{"score":5.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@graphql-mesh/cli","fixedVersion":"0.82.22"},{"ecosystem":"npm","name":"@graphql-mesh/http","fixedVersion":"0.3.19"}],"fix":{"url":"https://github.com/Urigo/graphql-mesh/commit/95d93e7c140c2995b37e9d822aa3fe4e24ed2e78","label":"Urigo/graphql-mesh@95d93e7"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27098.json"},{"type":"ADVISORY","url":"https://github.com/ardatan/graphql-mesh/security/advisories/GHSA-j2wh-wrv3-4x4g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27098"},{"type":"WEB","url":"https://github.com/Urigo/graphql-mesh/security/advisories/GHSA-j2wh-wrv3-4x4g"},{"type":"WEB","url":"https://github.com/Urigo/graphql-mesh/commit/95d93e7c140c2995b37e9d822aa3fe4e24ed2e78"},{"type":"PACKAGE","url":"https://github.com/Urigo/graphql-mesh"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:19.322024866Z"}}