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TI-2025-32340 Aliases CVE-2025-51479GHSA-4v78-j8g9-rpv2

Authorization bypass in update_user_group in onyx-dot-app Onyx Enterprise Edition 0.27.0…

Priority MEDIUM 58CWE-639Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

Authorization bypass in update_user_group in onyx-dot-app Onyx Enterprise Edition 0.27.0 allows remote authenticated attackers to modify arbitrary user groups via crafted PATCH requests to the /api/manage/admin/user-group/id endpoint, bypassing intended curator-group assignment checks.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00329 26th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
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
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:onyx:onyx:0.27.0:*:*:*:enterprise:*:*:*0.27.0VulnerableOnyx
  • cpe:2.3:a:onyx:onyx:0.27.0:*:*:*:enterprise:*:*:* Versions 0.27.0 Vulnerable ·Onyx

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-51479
  2. 2026-10-03 Alias added: GHSA-4v78-j8g9-rpv2

References

Exploit 2

Other 1

  • TI-2024-07201 Improper Access Control in danswer-ai/danswer CVSS 3.1HIGH 8.1
  • TI-2026-30588 Onyx: IDOR in /chat/file/{file_id} allows any authenticated user to download other users files CVSS 3.1MEDIUM 6.5
  • TI-2024-08917 Unauthorized Access in danswer-ai/danswer CVSS 3.1MEDIUM 6.5
  • TI-2025-07218 Onyx Chat Interface a3_generate_simple_sql.py generate_simple_sql sql injection CVSS 4.0MEDIUM 5.3
  • TI-2026-30587 Onyx: IDOR in /chat/stop-chat-session allows any authenticated user to interrupt other users chat sessions CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences