CVE-2026-19244
Description
A vulnerability was detected in HKUDS nanobot up to 0.2.1. The affected element is the function connect_mcp_servers of the file nanobot/agent/tools/mcp.py of the component MCP enabledTools Scope Handler. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 0.3.0 is sufficient to fix this issue. The patch is named 4436. You should upgrade the affected component. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: "Both reports describe the same root cause: MCP resource and prompt wrappers could be registered outside the intended enabledTools scope. The registration boundary was corrected".
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://gist.github.com/YLChen-007/3de5f50d167a878f7530f57ed018d508
- https://github.com/HKUDS/nanobot/
- https://github.com/HKUDS/nanobot/issues/4435
- https://github.com/HKUDS/nanobot/pull/4436
- https://github.com/HKUDS/nanobot/releases/tag/v0.3.0
- https://vuldb.com/cve/CVE-2026-19244
- https://vuldb.com/submit/865116
- https://vuldb.com/submit/865118
- https://vuldb.com/vuln/386998
- https://vuldb.com/vuln/386998/cti
CWEs
CWE-266 CWE-284
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.