CVE-2026-77087
CriticalCVSS 9.6Exploitation Probability (EPSS)
Low risk40th percentile - higher than 40% of all known CVEs
Summary
Paperclip before 0.3.1 in default local_trusted mode fails to validate Host headers, allowing attackers to execute arbitrary commands via DNS rebinding. An attacker can craft a malicious webpage that, when visited by a developer running Paperclip locally, uses DNS rebinding to make authenticated API requests and execute commands through the process adapter.
Risk Assessment
An attacker can take control of a local development environment and execute arbitrary commands, potentially leading to data theft or further attacks on infrastructure.
Recommendation
Update Paperclip to version 0.3.1 or later and ensure Host header validation is enabled.
Other vulnerabilities in Paperclip
See all- CVE-2026-119713High
Paperclip 2026.403.0 before 2026.416.0 contains a remote code execution vulnerability that allows agent API key holders to set cleanupCommand and teardownCommand via PATCH /api/execution-workspaces/:id. When the workspace is archived, cleanupExecutionWorkspaceArtifacts runs these commands through a shell as the Paperclip server process, executing attacker-chosen OS commands on the server host.
- CVE-2026-41208High
Paperclip (@paperclipai/server) versions prior to 2026.416.0 contain a privilege escalation vulnerability that allows an attacker with an Agent API key to execute arbitrary OS commands on the Paperclip server host. Agents can update their own adapterConfig via the /agents/:id endpoint, and the adapterConfig.workspaceStrategy.provisionCommand field is later executed by the server during workspace provisioning.
Original NVD description (English source)
Paperclip before 0.3.1 in default local_trusted mode fails to validate Host headers, allowing attackers to execute arbitrary commands via DNS rebinding. An attacker can craft a malicious webpage that, when visited by a developer running Paperclip locally, uses DNS rebinding to make authenticated API requests and execute commands through the process adapter.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS