{"action":"Upgrade next to 15.5.16 or later.","affected":[{"fixed":"15.5.16","introduced":"12.2.0"},{"fixed":"16.2.5","introduced":"16.0.0"}],"component":"next","cve_ids":["CVE-2026-44573"],"ecosystem":"npm","epss":0.00796,"exploited":false,"fixed_versions":["15.5.16","16.2.5"],"ghsa_id":"GHSA-36qx-fr4f-26g5","id":"tcs_01M5KEW9W07W14AKN3R8B8BSB5","modified_at":"2026-09-10T03:51:04.325298044Z","published_at":"2026-05-11T15:53:51Z","references":["https://osv.dev/vulnerability/GHSA-36qx-fr4f-26g5","https://github.com/vercel/next.js/security/advisories/GHSA-36qx-fr4f-26g5","https://nvd.nist.gov/vuln/detail/CVE-2026-44573","https://github.com/vercel/next.js","https://github.com/vercel/next.js/releases/tag/v15.5.16","https://github.com/vercel/next.js/releases/tag/v16.2.5"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-36qx-fr4f-26g5","url":"https://osv.dev/vulnerability/GHSA-36qx-fr4f-26g5"}],"summary":"Next.js has a Middleware / Proxy bypass in Pages Router applications using i18n"}