OtterMind Nubase Missing Authentication in Storage Object API
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
OtterMind Nubase through 0.1.4 does not require authentication on the storage object API path /storage/v1/object/{bucketId}/{path} for any HTTP method. This missing authentication for a critical function (CWE-306) lets an unauthenticated remote attacker download objects from private buckets and delete stored objects, provided the attacker knows the tenant subdomain, bucket id and object path. The CVSS 4.0 base score is 8.3 (HIGH), and the facts report no public exploitation.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
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
Remediation
The sources list no fixed version for Nubase.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-16 Threatist record created from CVE-2026-111701
- 2026-10-16 Alias added: GHSA-4jxc-c3cr-q9xx
- 2026-10-18 CISA SSVC decision points changed
- 2026-10-18 Priority changed: MEDIUM → LOW
References
Other 3
- https://github.com/OtterMind/Nubase/blob/v0.1.4/src/main/java/ai/nubase/common/multitenancy/UnifiedMultiTenancyFilter.java#L363-L379
- 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
More OtterMind vulnerabilities
- TI-2026-45153 Chat2DB < 5.3.0 Insecure Direct Object Reference via GET /api/connection/datasource CVSS 4.0HIGH 7.1
Sources
- CVE-2026-111701 · CVE Program
- CVE-2026-111701 · NVD
- FIRST EPSS
- GHSA-4jxc-c3cr-q9xx · GitHub Advisory Database · CC BY 4.0
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