We have the first vendor product actually vulnerable to that Apache Struts vuln from December 2023 - CVE-2023-50164.
Product: Trackplus Allegra
Tailored POC: https://srcincite.io/pocs/src-2024-0001.py.txt
Advisory: https://srcincite.io/advisories/src-2024-0001/
Complete with ../.. directory traversal too.
Disclosure Timeline:
2023-11-08 – Vulnerability reported to security@struts.apache.org
2023-12-21 – Silently patched by the vendor