CVE-2026-65920

CVE-2026-65920

A flaw was found in Diffusers. This path traversal vulnerability in the `_get_checkpoint_shard_files` function allows a remote attacker to read arbitrary files. By supplying malicious `weight_map` values in model index JSON, an attacker can use `../` sequences or absolute paths to escape the model directory and read sensitive files outside the intended location during model loading. This could lead to information disclosure.

GHSA-9576-hw58-7552

Diffusers through 0.39.0, fixed in commit cee298c, contains a path traversal vulnerability in the _get_checkpoint_shard_files function that allows attackers to read arbitrary files by supplying malicious weight_map values in model index JSON. Attackers can use ../ sequences or absolute paths in weight_map entries to escape the model directory and read safetensors files outside the intended location during model loading.