An issue was discovered in tangro Business Workflow before 1.18.1. No (or broken) access control checks exist on the /api/document/<DocumentID>/attachments API endpoint. Knowing a document ID, an attacker can list all the attachments of a workitem, including their respective IDs. This allows the attacker to gather valid attachment IDs for workitems that do not belong to them.

Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.

tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.

IBM Automation Workstream Services 19.0.3, 20.0.1, 20.0.2, IBM Business Automation Workflow 18.0, 19.0, and 20.0 and IBM Business Process Manager 8.6 could allow an authenticated user to obtain sensitive information or cuase a denial of service due to iimproper authorization checking. IBM X-Force ID: 189445.

IBM Business Automation Workflow 19.0.0.3 stores potentially sensitive information in log files that could be read by a local user. IBM X-Force ID: 190991.

IBM Business Automation Workflow 20.0.0.1 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 186285.

IBM Business Automation Workflow 18.0, 19.0, and 20.0 and IBM Business Process Manager 8.0, 8.5, and 8.6 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system. IBM X-Force ID: 182715.

IBM Business Automation Workflow C.D.0 and IBM Business Process Manager 8.0, 8.5, and 8.6 are vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-ForceID: 182714.

IBM Business Process Manager 8.5, 8.6 and IBM Business Automation Workflow 18.0, 19.0, and 20.0 are vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 182371.

IBM Business Process Manager 8.5, 8.6 and IBM Business Automation Workflow 18.0, 19.0, and 20.0 are vulnerable to stored cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 186841.