{"cve":"CVE-2025-53548","nvd":{"published":"2025-07-09T18:15:24.157","modified":"2026-06-17T09:38:25.657","status":"Deferred","description":"Clerk helps developers build user management. Applications that use the verifyWebhook() helper to verify incoming Clerk webhooks are susceptible to accepting improperly signed webhook events. The issue was resolved in @clerk/backend 2.4.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-345"],"references":["https://github.com/clerk/javascript/security/advisories/GHSA-9mp4-77wg-rwx9"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:04:28.436527499+00:00"},"epss":{"cve":"CVE-2025-53548","score":0.00172,"percentile":0.06574,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-9mp4-77wg-rwx9","url":"https://osv.dev/vulnerability/GHSA-9mp4-77wg-rwx9","summary":"@clerk/backend Performs Insufficient Verification of Data Authenticity","modified":"2025-07-09T20:15:13Z","packages":[{"ecosystem":"npm","name":"@clerk/backend","purl":"pkg:npm/%40clerk/backend","ranges":[">=2.0.0 <2.4.0"],"fixed":["2.4.0"]},{"ecosystem":"npm","name":"@clerk/astro","purl":"pkg:npm/%40clerk/astro","ranges":[">=2.9.0 <2.10.2"],"fixed":["2.10.2"]},{"ecosystem":"npm","name":"@clerk/express","purl":"pkg:npm/%40clerk/express","ranges":[">=1.6.0 <1.7.4"],"fixed":["1.7.4"]},{"ecosystem":"npm","name":"@clerk/fastify","purl":"pkg:npm/%40clerk/fastify","ranges":[">=2.3.0 <2.4.4"],"fixed":["2.4.4"]},{"ecosystem":"npm","name":"@clerk/nextjs","purl":"pkg:npm/%40clerk/nextjs","ranges":[">=6.2.10 <6.23.3"],"fixed":["6.23.3"]},{"ecosystem":"npm","name":"@clerk/nuxt","purl":"pkg:npm/%40clerk/nuxt","ranges":[">=1.7.0 <1.7.5"],"fixed":["1.7.5"]},{"ecosystem":"npm","name":"@clerk/react-router","purl":"pkg:npm/%40clerk/react-router","ranges":[">=1.5.0 <1.6.4"],"fixed":["1.6.4"]},{"ecosystem":"npm","name":"@clerk/remix","purl":"pkg:npm/%40clerk/remix","ranges":[">=4.8.0 <4.8.5"],"fixed":["4.8.5"]},{"ecosystem":"npm","name":"@clerk/tanstack-react-start","purl":"pkg:npm/%40clerk/tanstack-react-start","ranges":[">=0.16.0 <0.18.3"],"fixed":["0.18.3"]}]}],"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."]}