CVE-2026-77087

EUVD-2026-63991
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.6 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/paperclipai/paperclip/security/advisories/GHSA-x8hx-rhr2-9rf7
https://www.vulncheck.com/advisories/paperclip-before-remote-code-execution-via-dns-rebinding
https://github.com/paperclipai/paperclip/security/advisories/GHSA-x8hx-rhr2-9rf7