{"id":"CVE-2025-48947","aliases":["EUVD-2025-16914","GHSA-f3fg-mf2q-fj3f"],"status":"published","title":"NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies","description":"The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. In Auth0 Next.js SDK versions 4.0.1 through 4.6.0, `__session` cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers. Three preconditions must be met in order for someone to be affected by the vulnerability: Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0, applications using CDN or edge caching that caches responses with the Set-Cookie header, and if the Cache-Control header is not properly set for sensitive responses. Users should upgrade auth0/nextjs-auth0 to v4.6.1 to receive a patch.","severity":{"version":"4.0","score":7.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00435,"percentile":0.38272,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-525"],"published":"2025-06-04T20:14:44Z","modified":"2026-10-28T02:30:52Z","fixes":[{"ecosystem":"npm","package":"@auth0/nextjs-auth0","fixed_in":["4.6.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@auth0/nextjs-auth0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.1"},{"last_affected":"4.6.0"},{"fixed":"4.6.1"}]}]},{"source":"osv","ecosystem":"npm","package":"@auth0/nextjs-auth0","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.1"},{"fixed":"4.6.1"}]}]}],"products":[{"vendor":"auth0","product":"nextjs-auth0"}],"references":[{"url":"https://github.com/auth0/nextjs-auth0/security/advisories/GHSA-f3fg-mf2q-fj3f","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/auth0/nextjs-auth0/commit/12a62ca596db3b0827b39a4b865b882423e7cb1e","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-48947","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-f3fg-mf2q-fj3f"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/48xxx/CVE-2025-48947.json","tags":["advisory"]},{"url":"https://github.com/auth0/nextjs-auth0","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-48947","title":"NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies","description":"The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. In Auth0 Next.js SDK versions 4.0.1 through 4.6.0, `__session` cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers. Three preconditions must be met in order for someone to be affected by the vulnerability: Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0, applications using CDN or edge caching that caches responses with the Set-Cookie header, and if the Cache-Control header is not properly set for sensitive responses. Users should upgrade auth0/nextjs-auth0 to v4.6.1 to receive a patch.","status":"published","published":"2025-06-04T20:14:44.369Z","modified":"2025-06-04T20:50:02.568Z","cvss":[{"version":"4.0","score":7.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high","assessor":"cna"}],"cwes":["CWE-525"],"updated_at":"2026-11-02T14:32:41.41198Z"}],"euvd":[{"id":"EUVD-2025-16914","description":"The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. In Auth0 Next.js SDK versions 4.0.1 through 4.6.0, `__session` cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers. Three preconditions must be met in order for someone to be affected by the vulnerability: Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0, applications using CDN or edge caching that caches responses with the Set-Cookie header, and if the Cache-Control header is not properly set for sensitive responses. Users should upgrade auth0/nextjs-auth0 to v4.6.1 to receive a patch.","status":"published","published":"2025-06-04T20:14:44Z","modified":"2025-06-04T20:50:02Z","cvss":[{"version":"4.0","score":7.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high"}],"updated_at":"2026-11-02T20:32:29.680736Z"}],"ghsa":[{"id":"GHSA-f3fg-mf2q-fj3f","title":"NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies","description":"**Overview**\nIn Auth0 Next.js SDK versions 4.0.1 to 4.6.0, __session cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers.\n\n**Am I Affected?**\nYou are affected by this vulnerability if you meet the following preconditions:\n\n1. Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0,\n2. Applications using CDN or edge caching that caches responses with the Set-Cookie header.\n3. If the Cache-Control header is not properly set for sensitive responses.\n\n**Fix**\nUpgrade auth0/nextjs-auth0 to v4.6.1.","status":"published","published":"2025-06-04T21:24:52Z","modified":"2025-06-04T22:57:22Z","cvss":[{"version":"4.0","score":7.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high"}],"cwes":["CWE-525"],"updated_at":"2026-11-02T14:38:45.948817Z"}],"nvd":[{"id":"CVE-2025-48947","description":"The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. In Auth0 Next.js SDK versions 4.0.1 through 4.6.0, `__session` cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers. Three preconditions must be met in order for someone to be affected by the vulnerability: Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0, applications using CDN or edge caching that caches responses with the Set-Cookie header, and if the Cache-Control header is not properly set for sensitive responses. Users should upgrade auth0/nextjs-auth0 to v4.6.1 to receive a patch.","status":"published","published":"2025-06-04T21:15:40.42Z","modified":"2026-06-17T09:30:32.03Z","cvss":[{"version":"4.0","score":7.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-525"],"updated_at":"2026-11-02T14:11:10.8732Z"}],"osv":[{"id":"CVE-2025-48947","title":"NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies","description":"The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. In Auth0 Next.js SDK versions 4.0.1 through 4.6.0, `__session` cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers. Three preconditions must be met in order for someone to be affected by the vulnerability: Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0, applications using CDN or edge caching that caches responses with the Set-Cookie header, and if the Cache-Control header is not properly set for sensitive responses. Users should upgrade auth0/nextjs-auth0 to v4.6.1 to receive a patch.","status":"published","published":"2025-06-04T20:14:44.369Z","modified":"2026-10-28T02:30:52.155465887Z","cvss":[{"version":"4.0","score":7.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high"}],"cwes":["CWE-525"],"updated_at":"2026-11-02T15:44:50.037003Z"},{"id":"GHSA-f3fg-mf2q-fj3f","title":"NextJS-Auth0 SDK Vulnerable to CDN Caching of Session Cookies","description":"**Overview**\nIn Auth0 Next.js SDK versions 4.0.1 to 4.6.0, __session cookies set by auth0.middleware may be cached by CDNs due to missing Cache-Control headers.\n\n**Am I Affected?**\nYou are affected by this vulnerability if you meet the following preconditions:\n\n1. Applications using the NextJS-Auth0 SDK, versions between 4.0.1 to 4.6.0,\n2. Applications using CDN or edge caching that caches responses with the Set-Cookie header.\n3. If the Cache-Control header is not properly set for sensitive responses.\n\n**Fix**\nUpgrade auth0/nextjs-auth0 to v4.6.1.","status":"published","published":"2025-06-04T21:24:52Z","modified":"2025-06-04T22:57:21Z","cvss":[{"version":"4.0","score":7.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high"}],"cwes":["CWE-525"],"updated_at":"2026-11-02T15:46:45.639885Z"}]}}