Quick answers
- Is CVE-2026-77516 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77516 being exploited in the wild.
- How severe is CVE-2026-77516?
- Medium severity, with a CVSS score of 5.4, published 21 September 2026.
- Which products and versions are affected?
- 1Panel MaxKB 2.0.0 through 2.9.2.
- Is there a fix for CVE-2026-77516?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-77516 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-77516?
- Check whether you run 1Panel MaxKB at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a missing authorization check (CWE-862/CWE-639) in the agent and workflow tool-dispatch code path. While dedicated tool routes enforce per-tool permissions via WorkspaceUserResourcePermission, the workflow and agent dispatch paths in base_tool_lib_node.py and base_tool_node.py skip this check and execute tools with server-side-injected credentials. An authenticated low-role workspace member can bind a denied tool via tool_ids, skill_tool_ids, or mcp_tool_ids without per-tool validation, execute it through workflow dispatch, and receive decrypted RSA-encrypted init_params carrying the tool's secrets.
Affected products
- 1Panel MaxKB 2.0.0 through 2.9.2
Timeline
- 2026-09-21: disclosed