PoC-CVE-2026-21858

PoC-CVE-2026-21858 n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remo...

CVE-2026-21858

CVE-2026-21858 n8n Workflow Automation Platform - Remote Code Execution A security research tool for detecting CVE-2026-21858, a critical remote code execution vulnerability in the n8n workflow automation platform. Table of Contents Vulnerability Summary Affected Versions Technical Analysis...

PYSEC-2026-3853 JupyterHub has Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login

Impact Invalid input to login resulted in unbounded logging output. Only form-based Authenticators the default PAM Authenticator, but not the more widely used OAuthenticator are affected. Patches Upgrade to 5.5.0. Workarounds Use an Authenticator that doesn't use a login form, such as...

JupyterHub has Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login

ImpactInvalid input to login resulted in unbounded logging output. Only form-based Authenticators the default PAM Authenticator, but not the more widely used OAuthenticator are affected. PatchesUpgrade to 5.5.0. WorkaroundsUse an Authenticator that doesn't use a login form, such as OAuthenticator...

GHSA-P43P-WHWX-Q52H JupyterHub has Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login

Impact Invalid input to login resulted in unbounded logging output. Only form-based Authenticators the default PAM Authenticator, but not the more widely used OAuthenticator are affected. Patches Upgrade to 5.5.0. Workarounds Use an Authenticator that doesn't use a login form, such as...

CVE-2026-54338

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and...

DEBIAN-CVE-2026-54338

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and...

CVE-2026-54338

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and...

CVE-2026-54338 JupyterHub: Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and...

CVE-2026-54338

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and...

CVE-2026-54338: Uncontrolled Resource Consumption

JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and...

⚡ Weekly Recap: AI Automation Exploits, Telecom Espionage, Prompt Poaching & More

This week made one thing clear: small oversights can spiral fast. Tools meant to save time and reduce friction turned into easy entry points once basic safeguards were ignored. Attackers didn't need novel tricks. They used what was already exposed and moved in without resistance. Scale amplified...

n8n Node.js Package 1.65.0 < 1.121.0 Improper Access Control (Ni8Mare)

The version of the n8n Node.js Package installed on the remote host is prior to 1.121.0. It is, therefore, affected by an improper access control vulnerability: - A vulnerability in n8n allows an attacker to access files on the underlying server through execution of certain form-based workflows. ...

Vulnerability fixed in n8n

N8n has fixed a vulnerability in versions below 1.121.0. The vulnerability in allows unauthorized external malicious parties to access files on the underlying server via specific, form-based workflows. This could expose sensitive information stored on the system and, depending on the configuratio...

n8n 输入验证错误漏洞

n8n is a scalable workflow automation tool from the n8n open source. An input validation error vulnerability exists in versions prior to n8n 1.121.0, which stems from an attacker being able to access underlying server files by executing a form-based workflow, potentially leading to the disclosure...

security-guide-for-developers

This is a security guide for web developers, covering various security topics such as authentication, authorization, data validation, and encryption. The guide is divided into several sections, including a security checklist, authentication and authorization, data validation and sanitation, and...

PYSEC-2025-12

CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy. Cross-site request forgery allows an unauthenticated attacker to hijack the authentication of a logged in user, and use the web API with the same permissions,including but not...

CVE-2024-53829 Cross-Site Request Forgery in CodeChecker API

CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy. Cross-site request forgery allows an unauthenticated attacker to hijack the authentication of a logged in user, and use the web API with the same permissions, including but not...

[SECURITY] Fedora 37 Update: curl-7.85.0-10.fc37

curl is a command line tool for transferring data with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, TELNET, DICT, LDAP, LDAPS, FILE, IMA P, SMTP, POP3 and RTSP. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies,...

WordPress Force Images Download 1.8 CSRF / SSRF

Exploit Author : Etharus Vulnerability : Cross Site Request Forgery to Server Side Request Forgery Impact : internal ip disclosure , file extension bypass, internal port scan. Product Vendor : Nazakat Ali Version Tested : 1.8 Date : 14/07/2023 Fofa Dork :...