# CVE-2026-123023: agentscope-ai AgentScope Bash Tool _bash.py check_permissions authorization

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

A flaw has been found in agentscope-ai AgentScope up to 2.0.8. This affects the function check_permissions of the file src/agentscope/tool/_builtin/_bash.py of the component Bash Tool. This manipulation causes incorrect authorization. Remote exploitation of the attack is possible. The exploit has been published and may be used. Upgrading to version 2.0.9 mitigates this issue. Patch name: 6b43b13a46401e86abd3defeed9a8bfe5b37bc6d. It is recommended to upgrade the affected component.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/agentscope-ai/agentscope/pull/2629
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/agentscope-ai/agentscope/commit/6b43b13a46401e86abd3defeed9a8bfe5b37bc6d
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/agentscope-ai/agentscope/releases/tag/v2.0.9

## Affected products and versions

- agentscope-ai / AgentScope: 2.0.0 (affected); 2.0.1 (affected); 2.0.2 (affected); 2.0.3 (affected); 2.0.4 (affected); 2.0.5 (affected); 2.0.6 (affected); 2.0.7 (affected); 2.0.8 (affected); 2.0.9 (unaffected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P; source: CNA: VulDB

- CVSS 3.1: 7.3 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 3.0: 7.3 (high); CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 2.0: 7.5 (high); AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C; source: CNA: VulDB

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-863, CWE-285

## Exploit evidence

- exploit: https://github.com/ybyu-ieu/agent-security-advisories/blob/main/agentscope/agentscope-bash-tool-tee-misclassification-arbitrary-file-write.md (CNA: VulDB)

## References

- https://vuldb.com/vuln/431396 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/431396/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-123023 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1033131 (CNA: VulDB; third-party-advisory)

- https://github.com/agentscope-ai/agentscope/issues/3313 (CNA: VulDB; issue-tracking)

- https://github.com/agentscope-ai/agentscope/pull/2629 (CNA: VulDB; issue-tracking, patch)

- https://github.com/ybyu-ieu/agent-security-advisories/blob/main/agentscope/agentscope-bash-tool-tee-misclassification-arbitrary-file-write.md (CNA: VulDB; exploit)

- https://github.com/agentscope-ai/agentscope/commit/6b43b13a46401e86abd3defeed9a8bfe5b37bc6d (CNA: VulDB; patch)

- https://github.com/agentscope-ai/agentscope/releases/tag/v2.0.9 (CNA: VulDB; patch)

- https://github.com/agentscope-ai/agentscope/ (CNA: VulDB; product)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-123023; retrieved 2026-11-05; source updated 2026-11-05

Revision: 5bfa76b94cac546aa564509625e8731ad8708aec7d7b70204741baab9307dd96

Canonical: https://y2.dev/cve/CVE-2026-123023

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.