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TI-2026-51289 Aliases CVE-2026-73082

Activepieces: Server-side request forgery in MCP tool validation endpoint

Priority LOW 24CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

Activepieces is an open source AI workflow automation platform. Prior to 0.82.0, the POST /api/v1/projects/:projectId/mcp-server/validate-agent-mcp-tool endpoint makes an outbound HTTP or SSE request to a user-supplied serverUrl without URL validation or SSRF protection. An authenticated user can cause the Activepieces server to connect to internal services, cloud metadata endpoints, or arbitrary external hosts and probe network reachability from the Activepieces host. This issue is fixed in version 0.82.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00427 37th percentileScored 2026-11-07
Fix Fixed activepieces (activepieces): 0.82.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
activepiecesactivepiecesbefore 0.82.00.82.0Patch availableCNA
  • activepieces Vendoractivepieces Affected before 0.82.0 Fixed in 0.82.0 Patch available CNA

Remediation

  • Fix · CNA activepieces (activepieces) Fixed in 0.82.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73082

References

Other 4

  • TI-2026-35860 Activepieces: Cross-tenant data exposure and code injection via the Code piece sandbox cache CVSS 4.0CRITICAL 9.3
  • TI-2026-51288 Activepieces: Remote Code Execution via Command Injection in Code Step Name CVSS 4.0HIGH 8.7
  • TI-2026-51290 Activepieces: V8 Isolate Sandbox Bypass via importFresh Module Loading CVSS 4.0HIGH 7.6
  • TI-2026-38608 Activepieces: Arbitrary file write in git-sync via path traversal and symlinks CVSS 4.0MEDIUM 5.9
  • TI-2026-51291 Activepieces: Reflected Cross-Site Scripting in OAuth Redirect Endpoint CVSS 3.1MEDIUM 6.1
  • TI-2026-38609 Activepieces: Cross-tenant file download via missing JWT audience check on step-files signed URL CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences