CVE-2026-59100

2.3 lowEPSS 0.3%

Low (2.3). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 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

CVSS 3.1

5.0 medium

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
CWE: CWE-639
Published: 2026-07-02
Modified: 2026-07-14
Record from: the NVD, synced 2026-10-19

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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