CVE-2026-77087
Paperclip before 0.3.1 Remote Code Execution via DNS Rebinding
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.
INFO
Published Date :
Aug. 21, 2026, 3:16 p.m.
Last Modified :
Oct. 15, 2026, 7:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update Paperclip to version 0.3.1 or later.
- Configure Paperclip to use a secure mode.
- Validate all incoming Host headers.
- Restrict access to the local environment.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-77087.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-77087 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-77087
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-77087 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-77087 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 15, 2026
Action Type Old Value New Value Added Translation Title: paperclip de paperclipai, Description: Paperclip anterior a la versión 0.3.1 en modo local_trusted predeterminado no valida los encabezados Host, lo que permite a los atacantes ejecutar comandos arbitrarios a través del reenlace de DNS. Un atacante puede crear una página web maliciosa que, al ser visitada por un desarrollador ejecutando Paperclip localmente, utiliza el reenlace de DNS para realizar solicitudes de API autenticadas y ejecutar comandos a través del adaptador de procesos. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Added Reference https://github.com/paperclipai/paperclip/security/advisories/GHSA-x8hx-rhr2-9rf7 Added SSVC {'id': 'CVE-2026-77087', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-21T15:50:42.499767Z'} -
New CVE Received by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'paperclipai', 'product': 'paperclip', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.3.1', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.3.1', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-862 Added Reference https://github.com/paperclipai/paperclip/security/advisories/GHSA-x8hx-rhr2-9rf7 Added Reference https://www.vulncheck.com/advisories/paperclip-before-remote-code-execution-via-dns-rebinding