> CVE-2026-40525 [CRITICAL]

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PUBLISHED
2026-04-17 19:16
MODIFIED
2026-04-17 19:16
CVSS_SCORE V3
9.1
EPSS (Prob. Exploit)
0.57%
Top 52.5%
DATA SOURCES:
NVD 🔗 2026-04-17 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-02

> DESCRIPTION

OpenViking prior to commit c7bb167 contains an authentication bypass vulnerability in the VikingBot OpenAPI HTTP route surface where the authentication check fails open when the api_key configuration value is unset or empty. Remote attackers with network access to the exposed service can invoke privileged bot-control functionality without providing a valid X-API-Key header, including submitting attacker-controlled prompts, creating or using bot sessions, and accessing downstream tools, integrations, secrets, or data accessible to the bot.

> AFFECTED_PRODUCTS

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

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

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

> WEAKNESSES

CWE-636

> CWE DETAILED DESCRIPTIONS

CWE-636: Not Failing Securely - When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.

> GITHUB SECURITY ADVISORY

GHSA-jgq2-vq69-gr6h CRITICAL

OpenViking: Unauthenticated remote bot control via OpenAPI HTTP routes

AFFECTED PACKAGES:
PIP / openviking
< 0.3.9
Fixed in: 0.3.9

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

OpenViking < 0.3.9 Authentication Bypass via VikingBot OpenAPI

AFFECTED PACKAGES:
Unknown / Unknown
27 versions affected
ALIASES:
GHSA-jgq2-vq69-gr6h, PYSEC-2026-438

> HISTORIQUE DES MODIFICATIONS

Première apparition
17/04/2026 19:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-636: Not Failing Securely ('Failing Open') - When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that a...
Nouvelle valeur:
CWE-636: Not Failing Securely - When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, suc...
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-636: Not Failing Securely ('Failing Open') - When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that a...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://github.com/volcengine/OpenViking/commit/c7bb1676f4d037609f041bf39e4e2bd5...
https://github.com/volcengine/OpenViking/pull/1447
https://www.vulncheck.com/advisories/openviking-authentication-bypass-via-viking...
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