> CVE-2026-54457 [HIGH]

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PUBLISHED
2026-08-21 21:17
MODIFIED
2026-08-21 21:17
CVSS_SCORE V3
7.7
EPSS (Prob. Exploit)
0.40%
Top 67.2%
DATA SOURCES:
NVD 🔗 2026-08-21 CWE MITRE 🔗 2026-09-01 FIRST EPSS 🔗 2026-10-18 OSV 🔗 2026-10-26

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
EXPLOITABILITY
3.1
IMPACT
4.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-552 CWE-918

> CWE DETAILED DESCRIPTIONS

CWE-552: Files or Directories Accessible to External Parties - The product makes files or directories accessible to unauthorized actors, even though they should not be. | CWE-918: Server-Side Request Forgery (SSRF) - The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

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

AFFECTED PACKAGES:
Unknown / Unknown
121 versions affected
ALIASES:
GHSA-824w-x939-6cmc, PYSEC-2026-3541

> HISTORIQUE DES MODIFICATIONS

Première apparition
21/08/2026 21:17
Source: NVD
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-552: Files or Directories Accessible to External Parties - The product makes files or directories accessible to unauthorized actors, even though they should not be. | CWE-918: Server-Side Request ...
Total des modifications: 1 Dernière mise à jour: 1 month ago

> 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
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