Vulnerability Description
TensorZero is an open-source LLMOps platform that unifies an LLM gateway, observability, evaluation, optimization, and experimentation. Prior to 2026.6.0, the TensorZero Gateway /internal/object_storage endpoint accepts a caller-supplied JSON storage_path parameter that dynamically overrides the [object_storage] configuration. Selecting the filesystem storage type allows arbitrary files on the gateway filesystem to be read, including credential files. Selecting the s3_compatible storage type causes outbound object-storage requests to attacker-chosen internal or cloud-metadata endpoints. Exploitation requires access to the gateway, which can be authenticated or unauthenticated depending on deployment configuration. This issue is fixed in version 2026.6.0.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/tensorzero/tensorzero/commit/0abbc838bae3394fe7491dad7009670d
- https://github.com/tensorzero/tensorzero/releases/tag/2026.6.0
- https://github.com/tensorzero/tensorzero/security/advisories/GHSA-824w-x939-6cmc
FAQ
What is CVE-2026-54457?
CVE-2026-54457 is a vulnerability with a CVSS score of 7.7 (HIGH). TensorZero is an open-source LLMOps platform that unifies an LLM gateway, observability, evaluation, optimization, and experimentation. Prior to 2026.6.0, the TensorZero Gateway /internal/object_stora...
How severe is CVE-2026-54457?
CVE-2026-54457 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54457?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.