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TI-2026-39316 Aliases CVE-2026-54457GHSA-824w-x939-6cmc

TensorZero: Arbitrary file read and SSRF in TensorZero Gateway's internal object storage endpoint

Priority LOW 34CWE-552Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-552.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00402 34th percentileScored 2026-11-07
Fix Fixed tensorzero (tensorzero): 2026.6.0tensorzero (PyPI): 2026.6.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
tensorzerotensorzerobefore 2026.6.02026.6.0Patch availableCNA
—tensorzero (PyPI)before 2026.6.02026.6.0Patch availableGHSA-824w-x939-6cmc
  • tensorzero Vendortensorzero Affected before 2026.6.0 Fixed in 2026.6.0 Patch available CNA
  • tensorzero (PyPI) Vendor— Affected before 2026.6.0 Fixed in 2026.6.0 Patch available GHSA-824w-x939-6cmc

Remediation

  • Fix · CNA tensorzero (tensorzero) Fixed in 2026.6.0
  • Fix · GHSA-824w-x939-6cmc tensorzero (PyPI) Fixed in 2026.6.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54457
  2. 2026-10-03 Alias added: GHSA-824w-x939-6cmc

References

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences