Vulnerability · Published Aug 21, 2026 · Assigned by VulnCheck
CVE-2026-77087Paperclip before 0.3.1 Remote Code Execution via DNS Rebinding
Critical 9.6
In plain English
A critical-severity missing authorization in paperclip from paperclipai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.5%top 58.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| paperclipai | paperclip | 0 – before 0.3.1 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-x8hx-rhr2-9rf7) vendor-advisory
- VulnCheck Advisory: Paperclip before 0.3.1 Remote Code Execution via DNS Rebinding third-party-advisory