plugin/npapi/plugin.cpp in Gnash before 0.8.10 uses weak permissions (world readable) for cookie files with predictable names in /tmp, which allows local users to obtain sensitive information.
                
                    Exploit prediction scoring system (EPSS) score
                    
                        
                            EPSS Score 0.004
                        
                    
                    
                        
                            EPSS Ranking 62.6%