CVE-2026-17530Public exploitNetwork attack vector

Member-to-Admin tool access via unguarded handoffs

Published Jul 27, 2026 · Updated Jul 27, 2026

Incorrect authorization in AstrBot's unreleased master branch after 4.25.5 allows remote authenticated users to invoke admin-only MCP tools. _build_handoff_toolset rebuilds a subagent's default toolset from raw llm_tools.func_list entries instead of permission-guarded wrappers. Exposure requires subagents with tools set to null, attached non-builtin tools, dashboard admin restrictions, and member-level chat or API access; resulting actions depend on the attached tool.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in AstrBot's unreleased master branch after 4.25.5 allows remote authenticated users to invoke admin-only MCP tools. _build_handoff_toolset rebuilds a subagent's default toolset from raw llm_tools.func_list entries instead of permission-guarded wrappers. Exposure requires subagents with tools set to null, attached non-builtin tools, dashboard admin restrictions, and member-level chat or API access; resulting actions depend on the attached tool.

The record

CVE
CVE-2026-17530
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
AstrBotDevs
Product
AstrBot
Classifications
CWE-863, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.25.0
  2. Affected versionversion=4.25.1
  3. Affected versionversion=4.25.2
  4. Affected versionversion=4.25.3
  5. Affected versionversion=4.25.4
  6. Affected versionversion=4.25.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AstrBotDevs · AstrBotversion=4.25.0; version=4.25.1; version=4.25.2; version=4.25.3; version=4.25.4; version=4.25.5

Published CVSS scores

5.3TenableCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.5TenableAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3TenableCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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