n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

Impact In multi-tenant HTTP deployments — where a single n8n-mcp server serves several tenants — the locally stored workflow version history the automatic backups taken before workflow updates was not isolated per tenant. An authenticated tenant could read workflow version snapshots belonging to...

NPM: n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

NPM: n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments vulnerability discovered by ? in WordPress Npm n8n-mcp versions = 2.56.0...

Missing Authorization

Overview n8n-mcp is an Integration between n8n workflow automation and Model Context Protocol MCP Affected versions of this package are vulnerable to Missing Authorization in the workflow version history process in multi-tenant HTTP deployments due to improper isolation of stored backups between...

GHSA-J6R7-6FHX-77WX n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

Impact In multi-tenant HTTP deployments — where a single n8n-mcp server serves several tenants — the locally stored workflow version history the automatic backups taken before workflow updates was not isolated per tenant. An authenticated tenant could read workflow version snapshots belonging to...

Description of the security update for SharePoint Server 2016: June 9, 2026 (KB5002880)

None None...

Description of the security update for SharePoint Server 2019: June 9, 2026 (KB5002874)

None None...

Description of the security update for SharePoint Server Subscription Edition: June 9, 2026 (KB5002873)

None None...

PT-2026-58936

Summary Live PoC verified 2026-04-30 against a stock FacturaScripts master at 127.0.0.1:8081. A low-privilege user lowpriv created a customer with nombre = "=SUM1+1cmd|/c calc!A1". An admin then exported ListCliente to CSV via ?action=export&option=CSV. The downloaded file contains the raw payloa...

PT-2026-60089

Summary Kimai 2.56.0 contains an authenticated authorization bypass in the timesheet restart and duplicate workflows. After a user loses access to a project, the user can still derive a new timesheet from one of their historical entries and create a new record under that now-unauthorized project...

PT-2026-58968

Impact In multi-tenant HTTP deployments — where a single n8n-mcp server serves several tenants — the locally stored workflow version history the automatic backups taken before workflow updates was not isolated per tenant. An authenticated tenant could read workflow version snapshots belonging to...

PT-2026-60107

Name of the Vulnerable Software and Affected Versions n8n-mcp versions prior to 2.57.4 Description In multi-tenant HTTP mode, an authenticated tenant can access local default-scope workflow versions backups instead of being restricted to their own tenant scope. This issue allows an authenticated...

PT-2026-58933

Summary In multi-tenant HTTP mode ENABLE MULTI TENANT=true, an authenticated tenant could, under certain conditions, reach n8n-mcp's local default-scope workflow versions backups instead of being confined to its own tenant scope. This affects n8n-mcp's own local workflow-version storage, not a...

PT-2026-58850

Name of the Vulnerable Software and Affected Versions mastergo-design mastergo-magic-mcp versions prior to 0.2.1 Description Path traversal occurs in the execute function within the mastergo/component-workflow.md file of the mcp getComponentGenerator component. This issue arises from the improper...

Decidim: Verification documents can be downloaded through reusable links

Description Scanned identity-document images provided by participants and shown in the verification admin workflow are exposed through signed /rails/activestorage/disk/ URLs that can be fetched without any authenticated session. Anyone who obtains one of those URLs can retrieve the document until...

PraisonAI vulnerable to unauthenticated arbitrary file read via MCP workflow.show, workflow.validate, deploy.validate

SummaryThe fix for GHSA-9mqq-jqxf-grvw / CVE-2026-44336 is incomplete. The original advisory description named four vulnerable handlers in mcpserver/adapters/clitools.py: "registers four file-handling tools by default, praisonai.rules.create, praisonai.rules.show, praisonai.rules.delete, and...

PYSEC-2026-2908 PraisonAI vulnerable to unauthenticated arbitrary file read via MCP workflow.show, workflow.validate, deploy.validate

Summary The fix for GHSA-9mqq-jqxf-grvw / CVE-2026-44336 is incomplete. The original advisory description named four vulnerable handlers in mcpserver/adapters/clitools.py: "registers four file-handling tools by default, praisonai.rules.create, praisonai.rules.show, praisonai.rules.delete, and...

PraisonAI ships and generates a legacy API server with authentication disabled by default, allowing unauthenticated workflow execution

SummaryPraisonAI ships a legacy Flask API server with authentication disabled by default. When that server is used, any caller that can reach it can access /agents and trigger the configured agents.yaml workflow through /chat without providing a token. DetailsThe vulnerable server is the shipped...

PYSEC-2026-2904 PraisonAI ships and generates a legacy API server with authentication disabled by default, allowing unauthenticated workflow execution

Summary PraisonAI ships a legacy Flask API server with authentication disabled by default. When that server is used, any caller that can reach it can access /agents and trigger the configured agents.yaml workflow through /chat without providing a token. Details The vulnerable server is the shippe...

PYSEC-2026-3030 PySpector has a Plugin Sandbox Bypass leads to Arbitrary Code Execution

Summary PySpector versions = 0.1.6 are affected by a security validation bypass in the plugin system. The validateplugincode function in pluginsystem.py, performs static AST analysis to block dangerous API calls before a plugin is trusted and executed. However, the internal resolvename helper onl...

CVE-2026-15521

A vulnerability was identified in makafeli n8n-workflow-builder up to 0.11.0. Affected is an unknown function of the file build/server.cjs of the component updatenodefromfile. The manipulation of the argument filePath leads to path traversal. An attack has to be approached locally. The exploit is...