
CVE catalog
CVE-2026-45109
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
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.60% · Oct 25, 2026
A flaw was found in Next.js. A remote unauthenticated attacker could exploit a bypass in a security fix when using middleware.ts with Turbopack. This vulnerability could lead to the disclosure of sensitive information. next.js: Next.js: Information disclosure via security fix bypass in middleware with Turbopack This Important information disclosure flaw in Next.js allows a remote unauthenticated attacker to bypass a prior security fix when applications utilize `middleware.ts` with Turbopack. This bypass undermines intended access controls, potentially leading to the exposure of sensitive information in affected Red Hat AMQ and Red Hat Trusted Artifact Signer deployments. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | next.js | Not reported | 15.5.18 | fixed |
| Cpe | next.js | Not reported | 16.2.6 | fixed |
| Cpe | next.js | Not reported | 16.2.6 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | next.js | cpe | Not reported | 15.5.18 | Not reported | Not reported | Not reported |
| Cpe | next.js | cpe | Not reported | 16.2.6 | Not reported | Not reported | Not reported |
| Cpe | next.js | cpe | Not reported | 16.2.6 | Not reported | NVD-CVE-2026-45109 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:34608]
- [https://access.redhat.com/errata/RHSA-2026:37272]
- [https://access.redhat.com/errata/RHSA-2026:40974]
- [https://access.redhat.com/errata/RHSA-2026:54435]
- [https://access.redhat.com/security/cve/CVE-2026-45109]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2477190]
- [https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-45109]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45109.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]