{"action":"Upgrade @auth0/nextjs-auth0 to 4.18.0 or later.","affected":[{"fixed":"4.18.0","introduced":"4.12.0"}],"component":"@auth0/nextjs-auth0","cve_ids":["CVE-2026-40155"],"ecosystem":"npm","epss":0.00263,"exploited":false,"fixed_versions":["4.18.0"],"ghsa_id":"GHSA-xq8m-7c5p-c2r6","id":"tcs_01M5KGJM11BGP77YP6TCZRSRSN","modified_at":"2026-04-21T15:56:31.005142Z","published_at":"2026-04-21T15:21:46Z","references":["https://osv.dev/vulnerability/GHSA-xq8m-7c5p-c2r6","https://github.com/auth0/nextjs-auth0/security/advisories/GHSA-xq8m-7c5p-c2r6","https://nvd.nist.gov/vuln/detail/CVE-2026-40155","https://github.com/auth0/nextjs-auth0/commit/98c36dc306970c2230ea1a32efef431d29b99978","https://github.com/auth0/nextjs-auth0","https://github.com/auth0/nextjs-auth0/releases/tag/v4.18.0"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-xq8m-7c5p-c2r6","url":"https://osv.dev/vulnerability/GHSA-xq8m-7c5p-c2r6"}],"summary":"Auth0 Next.js SDK has Improper Proxy Cache Lookup"}