CVE-2026-63177 Malcolm Vulnerable to Authorization Bypass via URI Normalization Differential in Nginx Lua RBAC

Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, role-based access control enforced in the Nginx OpenResty Lua layer evaluates the raw, unnormalized ngx.var.requesturi, while Nginx itself routes requests using the normalized path. An authenticated low-privilege user can...

CVE-2026-63177

What is affected: Malcolm (network traffic analysis tool suite). The issue is in the Nginx OpenResty Lua RBAC layer prior to v26.07.0, where RBAC evaluates the unnormalized ngx.var.request_uri while Nginx routes on the normalized path. Root cause: URI normalization mismatch allows a low-privilege...

CVE-2026-63177 Malcolm Vulnerable to Authorization Bypass via URI Normalization Differential in Nginx Lua RBAC

Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, role-based access control enforced in the Nginx OpenResty Lua layer evaluates the raw, unnormalized ngx.var.requesturi, while Nginx itself routes requests using the normalized path. An authenticated low-privilege user can...