CVE-2026-59100

low

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.

References

https://www.vulncheck.com/advisories/lobechat-broken-object-level-authorization-via-chat-group-agent-operations

https://github.com/lobehub/lobehub/pull/16586

https://github.com/lobehub/lobehub/issues/16537

https://github.com/lobehub/lobehub/commit/9ed5a7e20d8a67c431265f5a252e9559d9920907

Details

Source: Mitre, NVD

Published: 2026-07-02

Updated: 2026-07-02

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 5

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

Severity: Medium

CVSS v4

Base Score: 2.3

Vector: 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

Severity: Low