Paperclip before 0.3.1 Remote Code Execution via DNS Rebinding
Priority HIGH 76CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00486 42nd percentileScored 2026-11-07
Fix Fixed paperclip (paperclipai): 0.3.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| paperclipai | paperclip | before 0.3.1 | 0.3.1 | Patch available | CNA |
- paperclip Vendorpaperclipai Affected before 0.3.1 Fixed in 0.3.1 Patch available CNA
Remediation
- Fix · CNA paperclip (paperclipai) Fixed in 0.3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-77087
- 2026-10-03 Alias added: GHSA-gwmj-hf32-5v8v
References
More paperclipai vulnerabilities
- TI-2026-83188 Command injection in Paperclip server lets API key holders run OS commands CVSS 4.0HIGH 8.7
Sources
- CVE-2026-77087 · CVE Program
- CVE-2026-77087 · NVD
- FIRST EPSS
- GHSA-gwmj-hf32-5v8v · GitHub Advisory Database · CC BY 4.0
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