CVE-2026-77087: Missing Authorization in paperclipai paperclip
Description
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.
CVSS v4.0
Score 9.4critical
Affected software
paperclipai
paperclip
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Paperclip versions prior to 0.3.1 running in default local_trusted mode do not validate Host headers properly. This flaw allows attackers to craft malicious webpages that leverage DNS rebinding attacks to bypass authentication and execute arbitrary commands through the process adapter. The vulnerability is identified as CVE-2026-77087 with a CVSS 4.0 score of 9.4, indicating critical severity. The attack requires user interaction (visiting a malicious webpage) and targets developers running Paperclip locally.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary commands on the developer's local environment running Paperclip. This can lead to full compromise of the local system where Paperclip is running, potentially exposing sensitive data or enabling further attacks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid running Paperclip in local_trusted mode or visiting untrusted webpages while running vulnerable versions. Monitor vendor communications for patches or updates addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-20T10:55:09.093Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a8869e8acd9273b494e470f
Added to database: 08/21/2026, 15:08:24 UTC
Last enriched: 10/02/2026, 15:42:50 UTC
Last updated: 10/05/2026, 18:56:37 UTC
Views: 58
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