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PYSEC-2026-2545
No affected components available
Impact
PartitionedDataset in kedro-datasets was vulnerable to path traversal. Partition IDs were concatenated directly with the dataset base path without validation. An attacker or malicious input containing .. components in a partition ID could cause files to be written outside the configured dataset directory, potentially overwriting arbitrary files on the filesystem. Users of PartitionedDataset with any storage backend (local filesystem, S3, GCS, etc.) are affected.
Patches
Yes. The vulnerability has been patched in kedro-datasets version 9.3.0.
Users should upgrade to kedro-datasets >= 9.3.0. The fix normalizes constructed paths using posixpath.normpath and validates that the resolved path remains within the dataset base directory before use, raising a DatasetError if the path escapes the base directory.
Workarounds
Users who cannot upgrade should validate partition IDs before passing them to PartitionedDataset, ensuring they do not contain .. path components.
References
Fix: https://github.com/kedro-org/kedro-plugins/pull/1346 Report: https://github.com/kedro-org/kedro/issues/5452
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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