Apache Olingo versions 4.0.0 to 4.7.0 provide the AsyncRequestWrapperImpl class which reads a URL from the Location header, and then sends a GET or DELETE request to this URL. It may allow to implement a SSRF attack. If an attacker tricks a client to connect to a malicious server, the server can make the client call any URL including internal resources which are not directly accessible by the attacker.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-1925
• https://mail-archives.apache.org/mod_mbox/olingo-user/202001.mbox/%3CCAGSZ4d6HwpF2woOrZJg_d0SkHytXJaCtAWXa3ZtBn33WG0YFvw%40mail.gmail.com%3E