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CVE-2026-27022 is a query injection vulnerability in the @langchain/langgraph-checkpoint-redis package, the Redis checkpoint/store backend for LangGraph. In the RedisSaver and ShallowRedisSaver classes, RediSearch queries are constructed by directly interpolating user-controlled filter keys and values into the query string without proper escaping. Because RediSearch supports special syntax characters and operators, attacker-supplied input can alter query semantics rather than being treated as literal data. The issue can be exploited to manipulate filter logic and bypass intended thread or tenant isolation when applications use user-controlled filters to retrieve checkpoint or conversation history. The vulnerability affects versions prior to 1.0.2 according to the primary description provided.
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A Redis injection vulnerability in LangGraph's alternative checkpointer backend that can contribute to the broader vulnerability chain affecting self-hosted deployments.
A RediSearch query injection vulnerability in the Redis checkpoint component for LangGraph that can bypass access controls.
A SQL injection vulnerability in LangGraph's Redis checkpointer caused by direct interpolation of user-controlled filter keys into queries instead of parameter binding.
A SQL injection vulnerability in LangGraph's Redis checkpointer caused by direct interpolation of user-controlled filter keys into queries. It affects deployments exposing get_state_history() with a user-controlled filter while using the Redis checkpointer.
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Cross-references every affected SKU, including bundled OEM variants.
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