odoo/addons/portal_issue/security/ir.model.access.csv

1	id	name	model_id:id	group_id:id	perm_read	perm_write	perm_create	perm_unlink
2	access_issues	project_issue	project_issue.model_project_issue	portal.group_portal_user	1	0	1	0
3	access_task	tasks	project.model_project_task	portal.group_portal_user	1	0	0	0