… -middleware-subrequest: middleware:middleware:middleware:middleware:middleware x-middleware-subrequest: src/middleware:src/middleware:src/middleware:src …

… attackers can effectively ignore the middleware’s intended rules, gaining unauthorized … js version, can be “middleware,” “src/middleware,” or a variation involving … external requests containing the “x-middleware-subrequest” header. Notably, applications …

… security announcement and fixed the middleware permission bypass vulnerability (CVE-2025 … header, when configuring to use middleware for authentication and authorization, an … the request containing the x-middleware-subrequest header. Statement This advisory …

… the authorization check occurs in middleware.” continues the advisory. … warned that websites using Middleware for user authorization without … Next.js users with middleware.ts or _middleware.ts files, or … if the file middleware.ts or _middleware.ts exists in …

… allows attackers to completely bypass middleware-based security controls by … js middleware that processes the x-middleware-subrequest header.  Next.js middleware serves … value includes the middlewareInfo.name, middleware execution is bypassed via NextResponse …

… bypass security controls implemented by middleware, posing significant risks to authentication … a repetitive pattern: x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware For setups using the src …

… vanish: bashCopycurl -H "x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware" \ -H " … checks: bashCopycurl -H "x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware" \ -H " …

… . Discussants included security consultant at Middleware Group, Tom Norcliffe; Director of … .” For his part, Norcliffe from Middleware Group emphasized the importance of …

… , a banking as a service middleware provider that provided a ledger …

… requires custom coding and specialized middleware, which can be costly and …