HIGH 7.5 npm
Next.js has a Middleware / Proxy bypass in App Router applications via segment-prefetch routes - Incomplete Fix Follow-Up
GHSA-26hh-7cqf-hhc6 · CVE-2026-45109
Published · Modified
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Description
Impact
It was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. Refer to CVE-2026-44575 for further details.
References
References
- WEB https://github.com/vercel/next.js/security/advisories/GHSA-267c-6grr-h53f
- WEB https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-45109
- WEB https://access.redhat.com/errata/RHSA-2026:34608
- WEB https://access.redhat.com/errata/RHSA-2026:37272
- WEB https://access.redhat.com/errata/RHSA-2026:40974
- WEB https://access.redhat.com/errata/RHSA-2026:54435
- WEB https://access.redhat.com/security/cve/CVE-2026-45109
- WEB https://bugzilla.redhat.com/show_bug.cgi?id=2477190
- PACKAGE https://github.com/vercel/next.js
- WEB https://github.com/vercel/next.js/releases/tag/v15.5.18
- WEB https://github.com/vercel/next.js/releases/tag/v16.2.6
- WEB https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45109.json
- WEB https://vercel.com/changelog/next-js-may-2026-security-release
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