Subject and purpose of work: This study examines how climate-related and pandemic-induced economic shocks are associated with household food insecurity across 28 post-socialist economies, contributing novel evidence on whether these shocks operate through distinct transmission channels, price-based versus income-based, and how household savings capacity moderates these relationships. Materials and methods: Using logistic regressions on Life in Transition Survey microdata covering about 28,000 households, we find that climate shocks are primarily associated with price-based vulnerability, while pandemic shocks correspond to income-driven consumption constraints. Results: Compound shock effects appear additive rather than multiplicative, a finding with direct policy relevance where co-occurring crises are increasingly common. Savings buffers are associated with lower food insecurity risk, though this effect weakens against systemic pandemic-type shocks. Conclusions: These results suggest climate adaptation should prioritize price stabilization, while pandemic responses require income protection and broader institutional safety nets. Household savings provide only a partial buffer, highlighting the need for institutional safety nets.