{"answers":{"affected":"18 open source packages ship an affected version, including @clerk/astro, @clerk/backend and @clerk/express.","exploited":"There is no known exploitation of CVE-2025-53548 in the wild and no public exploit code.","fix":"Upgrade @clerk/astro to 2.10.2 or later.","what":"CVE-2025-53548 is a high-severity vulnerability in clerk javascript, published on 9 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-53548 and fix it if it is affected.\n\nWhat it is: CVE-2025-53548 is a high-severity vulnerability in clerk javascript, published on 9 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-53548 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @clerk/astro (npm): affected from 2.9.0; fixed in 2.10.2\n- @clerk/astro (npm): affected from 2.9.0; fixed in 2.10.2\n- @clerk/backend (npm): affected from 2.0.0; fixed in 2.4.0\n- @clerk/backend (npm): affected from 2.0.0; fixed in 2.4.0\n- @clerk/express (npm): affected from 1.6.0; fixed in 1.7.4\n- @clerk/express (npm): affected from 1.6.0; fixed in 1.7.4\n- @clerk/fastify (npm): affected from 2.3.0; fixed in 2.4.4\n- @clerk/fastify (npm): affected from 2.3.0; fixed in 2.4.4\n- @clerk/nextjs (npm): affected from 6.2.10; fixed in 6.23.3\n- @clerk/nextjs (npm): affected from 6.2.10; fixed in 6.23.3\n- @clerk/nuxt (npm): affected from 1.7.0; fixed in 1.7.5\n- @clerk/nuxt (npm): affected from 1.7.0; fixed in 1.7.5\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-53548/ (Markdown: https://insights.sbomify.com/CVE-2025-53548/index.md)","id":"CVE-2025-53548","markdown":"https://insights.sbomify.com/CVE-2025-53548/index.md","name":"CVE-2025-53548","record":{"aliases":["GHSA-9mp4-77wg-rwx9"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Clerk backend library","requires_auth":"none","summary":"Attackers can bypass webhook signature verification in Clerk backend applications, allowing them to inject fake events. Developers using verifyWebhook() must upgrade.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"@clerk/backend Performs Insufficient Verification of Data Authenticity","id":"CVE-2025-53548","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"security_feature_bypass","year":"2025"},"n_packages":18,"n_references":1,"next":{"headline":"Matrix Rust SDK allows SQL injection in the EventCache implementation","id":"CVE-2025-53549"},"packages":[{"ecosystem":"npm","fixed":["2.10.2"],"introduced":["2.9.0"],"last_affected":[],"package":"@clerk/astro","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["2.10.2"],"introduced":["2.9.0"],"last_affected":[],"package":"@clerk/astro","purl":"pkg:npm/%40clerk/astro","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["2.4.0"],"introduced":["2.0.0"],"last_affected":[],"package":"@clerk/backend","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["2.4.0"],"introduced":["2.0.0"],"last_affected":[],"package":"@clerk/backend","purl":"pkg:npm/%40clerk/backend","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["1.7.4"],"introduced":["1.6.0"],"last_affected":[],"package":"@clerk/express","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["1.7.4"],"introduced":["1.6.0"],"last_affected":[],"package":"@clerk/express","purl":"pkg:npm/%40clerk/express","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["2.4.4"],"introduced":["2.3.0"],"last_affected":[],"package":"@clerk/fastify","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["2.4.4"],"introduced":["2.3.0"],"last_affected":[],"package":"@clerk/fastify","purl":"pkg:npm/%40clerk/fastify","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["6.23.3"],"introduced":["6.2.10"],"last_affected":[],"package":"@clerk/nextjs","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["6.23.3"],"introduced":["6.2.10"],"last_affected":[],"package":"@clerk/nextjs","purl":"pkg:npm/%40clerk/nextjs","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["1.7.5"],"introduced":["1.7.0"],"last_affected":[],"package":"@clerk/nuxt","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["1.7.5"],"introduced":["1.7.0"],"last_affected":[],"package":"@clerk/nuxt","purl":"pkg:npm/%40clerk/nuxt","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["1.6.4"],"introduced":["1.5.0"],"last_affected":[],"package":"@clerk/react-router","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["1.6.4"],"introduced":["1.5.0"],"last_affected":[],"package":"@clerk/react-router","purl":"pkg:npm/%40clerk/react-router","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["4.8.5"],"introduced":["4.8.0"],"last_affected":[],"package":"@clerk/remix","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["4.8.5"],"introduced":["4.8.0"],"last_affected":[],"package":"@clerk/remix","purl":"pkg:npm/%40clerk/remix","source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["0.18.3"],"introduced":["0.16.0"],"last_affected":[],"package":"@clerk/tanstack-react-start","purl":null,"source":"GHSA-9mp4-77wg-rwx9"},{"ecosystem":"npm","fixed":["0.18.3"],"introduced":["0.16.0"],"last_affected":[],"package":"@clerk/tanstack-react-start","purl":"pkg:npm/%40clerk/tanstack-react-start","source":"GHSA-9mp4-77wg-rwx9"}],"prev":{"headline":"Helm Chart Dependency Updating With Malicious Chart.yaml Content And Symlink Can Lead To Code Execution","id":"CVE-2025-53547"},"products":["javascript"],"published":"2025-07-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-07-09","vendors":["clerk"]},"summary":"Attackers can bypass webhook signature verification in Clerk backend applications, allowing them to inject fake events. Developers using verifyWebhook() must upgrade.","url":"https://insights.sbomify.com/CVE-2025-53548/"}