CVE-2026-49114

In ONNX before 1.21.0, the 'saveexternaldata' function builds the external-data file path from the model's externaldata location field and opens it for writing without 'ONOFOLLOW/OEXCL', after a non-atomic 'os.path.isfile' check. A local attacker with write access to the directory where a victim...

CVE-2026-49114 ONNX symlink-following and path-traversal arbitrary file write

In ONNX before 1.21.0, the 'saveexternaldata' function builds the external-data file path from the model's externaldata location field and opens it for writing without 'ONOFOLLOW/OEXCL', after a non-atomic 'os.path.isfile' check. A local attacker with write access to the directory where a victim...

EUVD-2026-63995

In ONNX before 1.21.0, the 'saveexternaldata' function builds the external-data file path from the model's externaldata location field and opens it for writing without 'ONOFOLLOW/OEXCL', after a non-atomic 'os.path.isfile' check. A local attacker with write access to the directory where a victim...

CVE-2026-49114

ONNX before 1.21.0 is vulnerable to a symlink-following arbitrary file write in the save_external_data function. The function constructs the output path from the model's external_data location field and opens it for writing without O_NOFOLLOW/O_EXCL, relying on a non-atomic os.path.isfile() check...