{"cve":"CVE-2025-67731","nvd":{"published":"2025-12-12T08:15:48.367","modified":"2026-10-07T20:10:01.970","status":"Analyzed","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://github.com/Aarondoran/servify-express/commit/8dff7f56504b356278d849734ef2050e5cd23b61","https://github.com/Aarondoran/servify-express/releases/tag/V1.2","https://github.com/Aarondoran/servify-express/security/advisories/GHSA-qgc4-8p88-4w7m"],"products":["servify-express.js:servify_express"],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2025-67731","score":0.00403,"percentile":0.34242,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-qgc4-8p88-4w7m","url":"https://osv.dev/vulnerability/GHSA-qgc4-8p88-4w7m","summary":"Servify-express rate limit issue","modified":"2026-09-10T03:50:32.066751268Z","packages":[{"ecosystem":"npm","name":"servify-express","purl":"pkg:npm/servify-express","ranges":["<1.2"],"fixed":["1.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}