CVE-2026-85685 agentscope-ai CVE debrief

Who should care

Defenders responsible for AgentScope deployments should assess exposure and prioritize remediation. This includes verifying affected versions, assessing exposure, and applying remediation provided by the vendor. Additionally, defenders should monitor for potential exploitation attempts and ensure proper configuration and secure directory permissions. IT teams responsible for AgentScope deployments should review and update their configurations to prevent exploitation of this vulnerability. Security teams should also review their monitoring and detection capabilities to identify potential exploitation attempts.

Why it matters

CVE-2026-85685 is a path traversal vulnerability in AgentScope that allows attackers to copy arbitrary server directories into the agent workspace. Defenders responsible for AgentScope deployments should assess exposure and prioritize remediation.

• Verify affected versions and assess exposure
• Apply remediation provided by the vendor
• Monitor for potential exploitation attempts
• Ensure proper configuration and secure directory permissions

Technical summary

The vulnerability is caused by a path traversal issue in LocalWorkspace.add_skill that allows attackers to copy arbitrary server directories into the agent workspace. The skill_path parameter is not properly sanitized, allowing attackers to traverse the directory structure and access sensitive information. This could potentially allow attackers to access sensitive information or execute arbitrary code.

Defensive priority

Defenders should prioritize verifying affected versions, assessing exposure, and applying remediation.

Recommended defensive actions

• Verify if the system is using AgentScope version 2.0.7.post1 or earlier
• Assess exposure to the vulnerability
• Apply remediation provided by the vendor
• Monitor for potential exploitation attempts
• 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

Evidence notes

The vulnerability allows attackers to supply any directory path in the skill_path request parameter to copy files into the skills directory. This could potentially allow attackers to access sensitive information or execute arbitrary code. Defenders should verify the affected versions, assess exposure, and apply remediation provided by the vendor. The vulnerability is caused by a path traversal issue in LocalWorkspace.add_skill that allows attackers to copy arbitrary server directories into the agent workspace. The skill_path parameter is not properly sanitized, allowing attackers to traverse the directory structure and access sensitive 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.