MaxKB: Missing per-tool authorization in the agent and workflow tool-dispatch path (CVE-2026-77516) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-77516

MaxKB: Missing per-tool authorization in the agent and workflow tool-dispatch path

Answer in brief

CVE-2026-77516 records a Unknown severity vulnerability in MaxKB: Missing per-tool authorization in the agent and workflow tool-dispatch path. The current sources do not mark it as known exploited. The current feed maps 1Panel-dev/MaxKB (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 21, 2026Updated Sep 21, 2026Source checked Sep 21, 2026First seen by HOL Sep 21, 2026Material review Sep 21, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps 1Panel-dev/MaxKB (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
1Panel-dev/MaxKBgeneric	>= 2.0.0, <= 2.9.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for 1Panel-dev/MaxKB.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 21, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source description

MaxKB is an open-source AI assistant for enterprise. From version 2.0.0 through 2.9.2, a lowest-role workspace member denied access to a tool by WorkspaceUserResourcePermission can still bind its identifier through tool_ids, skill_tool_ids, or mcp_tool_ids and execute it through the agent or workflow dispatch path. The dispatch path does not reapply the per-tool grant enforced by dedicated tool routes, and tool execution decrypts server-side init_params, allowing the caller to receive credentials carried by the denied tool. No fixed version is available as of this review.

Quoted source text, attributed separately from HOL analysis.