In Eclipse IDE versions < 2023-09 (4.29) some files with xml content are parsed vulnerable against all sorts of XXE attacks. The user just needs to open any evil project or update an open project with a vulnerable file (for example for review a foreign repository or patch).
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/8
https://github.com/eclipse-platform/eclipse.platform/pull/761
https://github.com/eclipse-platform/eclipse.platform.releng.buildtools/pull/45
https://github.com/eclipse-pde/eclipse.pde/pull/667/
https://github.com/eclipse-pde/eclipse.pde/pull/632/
https://github.com/eclipse-jdt/eclipse.jdt.ui/commit/13675b1f8a74f47de4da89ed0ded6af7c21dfbec
https://github.com/eclipse-jdt/eclipse.jdt.core/commit/38dd2a878f45cdb3d8d52090f1d6d1b532fd4c4d
https://github.com/eclipse-emf/org.eclipse.emf/issues/10
https://github.com/eclipse-cdt/cdt/commit/c7169b3186d2fef20f97467c3e2ad78e2943ed1b