Combodo iTop is a web based IT Service Management tool. In versions prior to 2.7.6 and 3.0.0, users of the iTop user portal can send TWIG code to the server by forging specific http queries, and execute arbitrary code on the server using http server user privileges. This issue is fixed in versions 2.7.6 and 3.0.0. There are currently no known workarounds.
https://github.com/Combodo/iTop/security/advisories/GHSA-v97m-wgxq-rh54
https://github.com/Combodo/iTop/commit/eb2a615bd28100442c7f6171707bb40884af2305
https://github.com/Combodo/iTop/commit/b6fac4b411b8d145fc30fa35c66b51243eafd06b
https://github.com/Combodo/iTop/commit/93f273a28778e5da8e51096f021d2dc1adbf4ef3