An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their privilege by tunneling HTTP requests in the raw HTTP request. This allows them to send requests that get executed by the backend server hosting the repository application. This is fixed in August 2023 IR, May 2023 Patch 4, February 2023 Patch 8, November 2022 Patch 11, and August 2022 Patch 13.
https://cyberplace.social/@GossiTheDog/111504514507788372
https://thehackernews.com/2023/11/cactus-ransomware-exploits-qlik-sense.html
https://www.praetorian.com/blog/doubleqlik-bypassing-the-original-fix-for-cve-2023-41265/
https://www.praetorian.com/blog/qlik-sense-technical-exploit/
https://community.qlik.com/t5/Release-Notes/tkb-p/ReleaseNotes