CVE-2026-111701: OtterMind Nubase through 0.1.4 Missing Authentication in Storage Object API

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-16 · updated 2026-10-16
Weakness: CWE-306

Description

OtterMind Nubase through 0.1.4 contains a missing authentication vulnerability that allows unauthenticated attackers to access private bucket objects because /storage/v1/object/{bucketId}/{path} is treated as public for every HTTP method. Attackers knowing a tenant subdomain, bucket id and object path can download objects from private buckets and delete stored objects without an apikey or JWT.

Affected products

OtterMind Nubase: through 0.1.4

References

https://github.com/OtterMind/Nubase/blob/v0.1.4/src/main/java/ai/nubase/auth/controller/storage/StorageObjectReadController.java#L68-L74
https://github.com/OtterMind/Nubase/blob/v0.1.4/src/main/java/ai/nubase/auth/service/StorageService.java#L176-L200
https://github.com/OtterMind/Nubase/blob/v0.1.4/src/main/java/ai/nubase/common/multitenancy/UnifiedMultiTenancyFilter.java#L363-L379
https://hackmd.io/@hieuPenguinnn/nubase-storage-private-object-unauth-download
https://www.vulncheck.com/advisories/ottermind-nubase-through-0.1.4-missing-authentication-in-storage-object-api

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