{"id":"CVE-2025-67731","aliases":["GHSA-qgc4-8p88-4w7m"],"url":"https://o3.security/vulnerability/CVE-2025-67731","summary":"Servify Express does not enforce rate limiting when parsing JSON","details":"Servify Express is a Node.js package to start an Express server and log the port it's running on. Prior to 1.2, the Express server used express.json() without a size limit, which could allow attackers to send extremely large request bodies. This can cause excessive memory usage, degraded performance, or process crashes, resulting in a Denial of Service (DoS). Any application using the JSON parser without limits and exposed to untrusted clients is affected. The issue is not a flaw in Express itself, but in configuration. This issue is fixed in version 1.2. To work around, consider adding a limit option to the JSON parser, rate limiting at the application or reverse-proxy level, rejecting unusually large requests before parsing, or using a reverse proxy (such as NGINX) to enforce maximum request body sizes.","published":"2025-12-12T07:40:53.047Z","modified":"2026-07-15T01:49:12.240212109Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"servify-express","fixedVersion":"1.2"}],"fix":{"url":"https://github.com/Aarondoran/servify-express/commit/8dff7f56504b356278d849734ef2050e5cd23b61","label":"Aarondoran/servify-express@8dff7f5"},"references":[{"type":"WEB","url":"https://github.com/Aarondoran/servify-express/releases/tag/V1.2"},{"type":"ADVISORY","url":"https://github.com/Aarondoran/servify-express/security/advisories/GHSA-qgc4-8p88-4w7m"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/67xxx/CVE-2025-67731.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-67731"},{"type":"FIX","url":"https://github.com/Aarondoran/servify-express/commit/8dff7f56504b356278d849734ef2050e5cd23b61"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:12.240212109Z"}}