CVE-2026-17530: AstrBotDevs AstrBot incorrect authorization in Subagent tool handoff

CVE-2026-17530 · Severity: medium · CVSS 6.3 · Published 2026-07-27

AstrBot is an AI agent development framework that integrates with various chat platforms and large language models. A security flaw in the subagent component allows low-privileged users to bypass permission checks and access administrative tools. This could allow an unauthorized user to execute restricted commands or access sensitive data by manipulating how the AI agent hands off tasks between different tools.

Quick answers

Is CVE-2026-17530 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-17530 being exploited in the wild.
How severe is CVE-2026-17530?
Medium severity, with a CVSS score of 6.3, published 27 July 2026.
Which products and versions are affected?
AstrBotDevs AstrBot up to 4.25.5.
Is there a fix for CVE-2026-17530?
A patch was published on 2026-06-15: Fix commit d23011262e8e75e1ec41b0f1f0091493a022327e authored. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-17530 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-17530?
Check whether anything you run is named in the advisory. 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

An incorrect authorization vulnerability exists in AstrBot up to 4.25.5 within the `_build_handoff_toolset` function of `AstrBot/astrbot/core/astr_agent_tool_exec.py`. The root cause is that the subagent handoff path rebuilds its toolset from the raw `llm_tools.func_list` instead of adhering to established permission boundaries. A remote attacker with low-privileged chat access can trigger a subagent with a null tools value to reach admin-restricted Model Context Protocol (MCP) tools. This bypasses intended access controls for non-builtin tools. A patch has been released in commit d23011262e8e75e1ec41b0f1f0091493a022327e to enforce persona tool boundaries.

Affected products

  • AstrBotDevs AstrBot up to 4.25.5

Timeline

  • 2026-06-15: patched: Fix commit d23011262e8e75e1ec41b0f1f0091493a022327e authored.
  • 2026-07-27: advisory: CVE-2026-17530 published.

References

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