CVE-2026-54457

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.7
EG Score
7.7(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 15, 2026

Last Modified

August 25, 2026

Advisory Details (3)

Auto-updated Aug 21, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

2026.6.0

Patch available: tensorzero/tensorzero 2026.6.0

https://github.com/tensorzero/tensorzero/releases/tag/2026.6.0
github_commit Patch Available

commit 0abbc838bae3 (tensorzero/tensorzero)

Patch available: tensorzero/tensorzero 2026.6.0 (contains commit 0abbc838bae3)

https://github.com/tensorzero/tensorzero/commit/0abbc838bae3394fe7491dad7009670d4e3b6cf8
github Patch Available

Arbitrary file read and SSRF in TensorZero Gateway's internal object storage endpoint · Advisory · tensorzero/tensorzero · GitHub

https://github.com/tensorzero/tensorzero/security/advisories/GHSA-824w-x939-6cmc

Vendor Advisories for CVE-2026-54457(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
tensorzero2025.10.0 ... 2026.5.2 (64 versions)2026.6.0—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 14× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 03:43 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-28 01:51 UTCEG score recompute
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-26 22:57 UTCEG score recompute
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 14:21 UTCEG score recompute
  9. 2026-08-25 14:00 UTCEG score recompute
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-24 14:31 UTCEG score recompute
  12. 2026-08-23 12:27 UTCEG score recompute
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-21 21:25 UTCEG score recompute
  15. 2026-07-30 21:41 UTCEG score recompute
  16. 2026-07-26 11:28 UTCEG score recompute
  17. 2026-07-23 03:19 UTCEG score recompute
  18. 2026-07-15 22:19 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54457?
CVE-2026-54457 is a high vulnerability published on July 15, 2026. 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/objectstorage endpoint accepts a caller-supplied JSON storagepath parameter that dynamically overrides the…
When was CVE-2026-54457 disclosed?
CVE-2026-54457 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54457 actively exploited?
CVE-2026-54457 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.5% of all scored CVEs.
What is the CVSS score of CVE-2026-54457?
CVE-2026-54457 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-54457?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54457, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-54457

Explore →

Is Your Infrastructure Affected by CVE-2026-54457?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs