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Cross-tenant file read in abp-next-admin blob download endpoint

Priority MEDIUM 64CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

abp-next-admin versions 10.4.0 through 10.7.0 contain an authorization bypass (CWE-639) in the BlobManagement download-by-name endpoint. An authenticated user can supply another tenant's tenantId in the request path, which makes DownloadByNameAsync switch tenant context and return that tenant's files.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

abp-next-admin 10.4.0 through 10.7.0 contains a cross-tenant authorization bypass in the BlobManagement download-by-name endpoint, letting authenticated users read other tenants' files. Attackers supply a victim tenantId in the request path, causing DownloadByNameAsync to switch tenant context and return blobs stored by that tenant.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00296 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
colininabp-next-admin10.4.0 – 10.7.0—No fix listedCNA
  • abp-next-admin Vendorcolinin Affected 10.4.0 – 10.7.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for abp-next-admin.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-119708
  2. 2026-10-30 Alias added: GHSA-46cx-8jfv-gcg7
  3. 2026-11-01 Priority changed: MEDIUM → LOW
  4. 2026-11-05 CISA SSVC decision points changed
  5. 2026-11-05 Priority changed: LOW → MEDIUM

References

  • TI-2026-75416 IDOR in abp-next-admin AIManagement lets users read other chats CVSS 4.0MEDIUM 5.3

Sources