CVE-2026-77087CWE-862broken-access-control

CVE-2026-77087

Critical · published August 21, 2026

CVSS v3.1
9.6
EPSS
0%
Percentile
40.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
9.4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS
0.00486 · 40.9th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-08-21T19:16Z
References (3)
https://github.com/paperclipai/paperclip/security/advisories/GHSA-x8hx-rhr2-9rf7 · [email protected]https://www.vulncheck.com/advisories/paperclip-before-remote-code-execution-via-dns-rebinding · [email protected]https://github.com/paperclipai/paperclip/security/advisories/GHSA-x8hx-rhr2-9rf7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 21 AUG 15:03Z
    Paperclip before 0.3.1 Remote Code Execution via DNS Rebinding
    cvelistv5