CVE-2026-59100

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

State: Published
Severity: 2.3 Low
Published: Jul 2, 2026
Updated: Jul 14, 2026
Reserved: Jul 2, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	2.3 Low	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N	VulnCheck
3.1	5.0 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L	VulnCheck

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
lobehublobehub	2.2.9 and earlierAffected

References

Researcher Disclosuretechnical-descriptionexploit
Fix PRissue-tracking
Fix Commitpatch
https://www.vulncheck.com/advisories/lobechat-broken-object-level-authorization-via-chat-group-agent-operationsthird-party-advisory

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