bx2-writeups

Writeups de Seguridad Una colección de mis writeups de ciberseguridad que cubren: TryHackMe Hack The Box Escalada de Privilegios en Linux Seguridad de IA e Infraestructura CTFs Retos de Seguridad Autor: Nanashi Bx2...

CTF

CTF Colección de retos de diversas competiciones...

DFIR-LABS

About DFIR LABS is a compilation of challenges that aims to provide practice in simple to advanced concepts in the following topics: Digital Forensics, Incident Response, Malware Analysis and Threat Hunting. This is aimed at Professionals, Security Researchers, Students, CTF Players as well as DF...

CVE-2026-100678

Versions of stoatchat prior to 0.15.5 are vulnerable to MFA brute-forcing because they fail to enforce account-level attempt limits on MFA login challenges. While IP-based rate limiting is present, attackers who already possess a valid password can bypass these restrictions by reusing MFA challen...

CVE-2026-100678: Improper Restriction of Excessive Authentication Attempts

stoatchat before 0.15.5 fails to enforce account-level attempt limits on MFA login challenges, allowing attackers who know a password to guess TOTP codes with only IP-based rate limiting. Attackers can reuse MFA challenge tickets across multiple failed attempts and distribute guesses across IP...

oss-oopssec-store v2.20.0

OSS - OopsSec Store Security training for the apps you actually ship. 36 challenges across web, API, authentication, business logic, cryptography, supply chain, AI agents and MCP. Break a deliberately vulnerable e-commerce app built on Next.js, React, TypeScript and Prisma. Find the bugs. Exploit...

Reveree: Diagnosing LLM Reverse-Engineering Agents

Reverse engineering RE is critical to security tasks such as malware analysis and vulnerability discovery, and large language model LLM agents are increasingly able to perform it autonomously. Capture-the-flag CTF RE challenges have become the standard proxy for measuring this capability, but...

ASIS-CTF-Quals-2026

ASIS CTF Quals 2026 — Writeups Solutions, exploits, and write...

RUSTSEC-2026-0231 Relay authentication challenges can exhaust memory

The SDK forwarded every NIP-42 AUTH challenge received from a relay through an unbounded command queue. Challenge handling can wait for an asynchronous signer or user interaction, so receiving challenges was substantially faster than completing the corresponding authentication work. A malicious...

GO-2026-5543 Go-ntlmssp NTLM challenges can panic on malformed payloads in github.com/Azure/go-ntlmssp

Go-ntlmssp NTLM challenges can panic on malformed payloads in github.com/Azure/go-ntlmssp...

Mythos Didn't Break Your Security Program. Your Exposure Window Could.

The industry spent the initial months after Anthropic's April 7 Mythos reveal focused on volume. How many new CVEs would Mythos add to an already overloaded pipeline? How quickly would the flood of AI-driven discovery overwhelm triage capabilities? How long would it take adversaries to weaponize...

CVE-2026-62290 cert-manager: Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials

cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace...

PT-2026-59021

aiograpi versions before 0.9.10 accepted server-supplied signup challenge paths and used them to build request URLs before validating that the paths were relative Instagram API paths. A malicious or tampered challenge payload could cause challenge handling requests to be sent outside the intended...

CVE-2026-56766

Hydra through 9.7, fixed in commit 9cc84c2, contains a stack buffer overflow in NTLM authentication across SMTP, POP3, IMAP, NNTP, HTTP, HTTP-Proxy, and HTTP-Proxy-Urlenum modules when processing malicious NTLM Type-2 challenges. A malicious server can send a crafted NTLM Type-2 challenge with an...

CVE-2026-56766

Hydra through 9.7, fixed in commit 9cc84c2, contains a stack buffer overflow in NTLM authentication across SMTP, POP3, IMAP, NNTP, HTTP, HTTP-Proxy, and HTTP-Proxy-Urlenum modules when processing malicious NTLM Type-2 challenges. A malicious server can send a crafted NTLM Type-2 challenge with an...

CVE-2026-46654 Plonky3 MultiField32Challenger: transcript malleability and challenge entropy loss

Plonky3 is a toolkit for polynomial IOPs PIOPs. Prior to versions 0.4.3 and 0.5.3, an attacker controlling prover-side observations can craft distinct transcripts that produce identical challenges, breaking the binding property of Fiat-Shamir. This issue has been patched in versions 0.4.3 and 0.5...

88% of people struggle to tell what’s real online

What would you trade for a technology that can do almost anything? For many people, the answer is clear: Everything they thought they could trust. In a few, short years, Artificial Intelligence AI tools have granted people unfettered access to easier writing, faster image generation, quicker...

Opportunities and Challenges in Securely Reusing and Repurposing Mobile Devices

An estimated 5.3 billion mobile phones became electronic waste in 2022. Many of these devices can be repurposed and used in different contexts to extend their lifetime and to reduce ecological impacts. An often overlooked aspect of smartphone reuse is cybersecurity: these devices embed...

The Intersection of Encryption and AI

As part of their 20th Anniversary celebration, Dark Reading asked five cybersecurity industry leaders who wrote blogs or columns for them over the years to select their favorite piece and share their reflections on the topic today. This is my section. Renowned technologist and author Bruce Schnei...

instagrapi: Unsafe signup challenge path handling in instagrapi

instagrapi versions before 2.6.9 accepted server-supplied signup challenge paths and used them to build request URLs before validating that the paths were relative Instagram API paths. A malicious or tampered challenge payload could cause challenge handling requests to be sent outside the intende...