{"id":"CVE-2026-45109","title":"Next.js is a React framework for building full-stack web applications","summary":"Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fix…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-288","CWE-358"],"vendor":"vercel","product":"next.js","affected":["next.js >= 15.2.0, < 15.5.18","next.js >= 16.0.0, < 16.2.6"],"patched":["next.js 16.2.6"],"published":"2026-05-13","updated":"2026-07-03","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45109","references":[{"url":"https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6","label":"security-advisories@github.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:34608","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-45109","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477190","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45109.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd"],"epss":0.00569,"epssPercentile":0.45916,"ingestedAt":"2026-07-03T14:03:37.064Z","slug":"CVE-2026-45109","body":"## Overview\n\nNext.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fixed in 15.5.18 and 16.2.6.\n\n## Affected\n\n- `next.js >= 15.2.0, < 15.5.18`\n- `next.js >= 16.0.0, < 16.2.6`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `next.js 16.2.6`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}