CVE-2026-14742
LowCVSS 3.1Summary
A vulnerability was found in langgraph library from langchain-ai up to version 1.2.4 in the _freeze function of _cache.py, where the default_cache_key argument causes use of a weak hash function. The attack can be carried out remotely but is difficult to exploit.
Risk Assessment
The organization is at risk of integrity compromise of the Task Result Cache, potentially leading to key collisions and unauthorized data access or manipulation of task results.
Recommendation
Immediately update langgraph to a version above 1.2.4 after the fix is released, or apply a temporary workaround such as disabling the vulnerable component until the patch is available.
Original NVD description (English source)
A vulnerability was determined in langchain-ai langgraph up to 1.2.4. The affected element is the function _freeze of the file libs/langgraph/langgraph/_internal/_cache.py of the component Task Result Cache. This manipulation of the argument default_cache_key causes use of weak hash. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.