EvalHack: Answer-Side Prompt Injection for Probing LLM Exam-Grading Panel Stability. - Catalin Anghel; Marian Viorel Craciun; Adina Cocu; Andreea Alexandra Anghel; Antonio Stefan Balau; Adrian Istrate; Aurelian-Dumitrache Anghele (Inf., 2026)