CVE-2026-77087

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 4.0

9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS 3.1

9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-25)

CWE

CWE-862

Published

2026-08-21

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

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

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