CVE-2026-81845 arben-adm CVE debrief

Who should care

Users of arben-adm mcp-sequential-thinking up to version 0.5.0 should be aware of this vulnerability and take steps to upgrade to version 0.6.0. Operators, platform administrators, vulnerability management teams, and security teams should review the official CVE record and NVD details for further information and plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Technical summary

A path traversal vulnerability exists in the import_session/export_session function of mcp_sequential_thinking/server.py in arben-adm mcp-sequential-thinking up to 0.5.0. This issue allows for remote attacks. Upgrading to version 0.6.0, which includes patch 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267, is recommended to address this vulnerability. Users should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance.

Defensive priority

Low-priority defensive review recommended due to limited attack surface and low CVSS score.

Recommended defensive actions

• Inventory and verify affected component versions
• Apply vendor remediation to upgrade to version 0.6.0
• Monitor for potential remote attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Evidence is limited; primary official records indicate a path traversal vulnerability in arben-adm mcp-sequential-thinking up to 0.5.0. Vendor remediation is available in version 0.6.0. Users should verify affected component versions and apply the patch. Defenders should review the official CVE record and NVD details for further information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.