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TI-2026-42280 Aliases CVE-2026-59100GHSA-hgpq-q5hf-7r77

LobeChat 2.2.9 - Broken Object Level Authorization via Chat-Group Agent Operations

Priority MEDIUM 45CWE-639Published · Updated

Key facts

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

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

Summary

LobeChat through 2.2.9 contains a broken object level authorization vulnerability that allows authenticated attackers to access and modify other users' chat-group agent data by supplying arbitrary group identifiers. Attackers can invoke the getGroupAgents, updateAgentInGroup, and removeAgentsFromGroup operations without user-scoped predicates to read agent listings, modify agent roles and ordering, and remove agents from chat groups belonging to other users.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00291 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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
lobehublobehubup to 2.2.9—No fix listedCNA
  • lobehub Vendorlobehub Affected up to 2.2.9 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59100
  2. 2026-10-03 Alias added: GHSA-hgpq-q5hf-7r77

References

Exploit 1

Patch 1

Other 1

  • TI-2026-39067 LobeHub: Unauthenticated SSRF in `/webapi/proxy` CVSS 3.1CRITICAL 9.0
  • TI-2026-83681 Path traversal in LobeHub Chat lets users write arbitrary files CVSS 4.0HIGH 8.7
  • TI-2024-31448 Lobe Chat has insufficient fix for GHSA-mxhq-xw3g-rphc (CVE-2024-32964) CVSS 3.1CRITICAL 9.0
  • TI-2024-21831 lobe-chat `/api/proxy` endpoint Server-Side Request Forgery vulnerability CVSS 3.1CRITICAL 9.0
  • TI-2026-58746 LobeChat 2.2.1 Webhook Signature Verification Bypass QQ Feishu CVSS 4.0MEDIUM 6.9
  • TI-2024-21832 ssrf vulnerability in lobe-chat CVSS 3.1HIGH 8.6
See all 21 →

Sources

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