What’s Vulnerable › Vulnerabilities

CVE-2026-59100: LobeChat 2.2.9 - Broken Object Level Authorization via Chat-Group Agent Operations

• Severity: medium (CVSS 5.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-02 · updated 2026-07-14
• Weakness: CWE-639

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.

Affected products

• lobehub: through 2.2.9

References

• https://github.com/lobehub/lobehub/commit/9ed5a7e20d8a67c431265f5a252e9559d9920907
• https://github.com/lobehub/lobehub/issues/16537
• https://github.com/lobehub/lobehub/pull/16586
• https://www.vulncheck.com/advisories/lobechat-broken-object-level-authorization-via-chat-group-agent-operations

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