GHSA-fm76-w8jw-xf8m When creating a new plugin using the `git` source, the user-controlled value `req.body.name` is used to build the plugin directo

router.post(
  "/",
  isAdmin,
  error_catcher(async (req, res) => {
    const plugin = new Plugin(req.body); // [1] 
      [...]
      try {
        await load_plugins.loadAndSaveNewPlugin( // [3] 
          plugin,
          schema === db.connectObj.default_schema || plugin.source === "github"
        );
        [...]
    }
  })
);

class Plugin {
  [...]
  constructor(o: PluginCfg | PluginPack | Plugin) {
    [...]
    this.name = o.name; // [2] 
    [...]
}

const loadAndSaveNewPlugin = async (plugin, force, noSignalOrDB) => {
  [...]
  const loader = new PluginInstaller(plugin); // [4] 
  const res = await loader.install(force); // [7] 
  [...]
};

class PluginInstaller {
  constructor(plugin, opts = {}) {
    [...]
    const tokens =
      plugin.source === "npm"
        ? plugin.location.split("/")
        : plugin.name.split("/"); // [5] 
    [...]
    this.tempDir = join(this.tempRootFolder, "temp_install", ...tokens); // [6] 
    [...]
  }

  
  async install(force) {
    [...]
    if (await this.prepPluginsFolder(force, pckJSON)) { // [8] 
    [...]
  }

  async prepPluginsFolder(force, pckJSON) {
    [...]
    switch (this.plugin.source) {
      [...]
      case "git":
        if (force || !(await pathExists(this.pluginDir))) { 
          await gitPullOrClone(this.plugin, this.tempDir); // [9] 
	  [...]
  }

const gitPullOrClone = async (plugin, pluginDir) => {
  [...]
  if (fs.existsSync(pluginDir)) {
    execSync(`git ${setKey} -C ${pluginDir} pull`);
  } else {
    execSync(`git ${setKey} clone ${plugin.location} ${pluginDir}`); // [10] 
  }
  [...]
};