ChatGPT Vulnerability, PAN-OS Actively Exploited, LLM Agent Powers Post-Exploitation

THN Daily Updates Cybersecurity Risk Management: Mastering the Fundamentals Using the NIST Cybersecurity Framework ($115.95 Value) FREE for a Limited Time Cybersecurity Risk Management Download Now Sponsored LATEST NEWS May 30, 2026 PAN-OS GlobalProtect Authentication Bypass (CVE-2026-0257) Under Active Exploitation Palo Alto Networks has warned that a recently disclosed medium-severity security flaw impacting PAN-OS and Prisma Access has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-0257 (CVSS... Read More [Webinar] How Modern Attack Paths Cross Code, Pipelines, and Cloud Learn AppSec secrets from industry veterans Mike McGuire (Wiz) and Salman Ladha (ex-Okta). Discover why your tools miss the real attack paths. Read More ChatGPhish Vulnerability Turns ChatGPT Web Summaries Into a Phishing Surface Cybersecurity researchers have disclosed details of a vulnerability in OpenAI ChatGPT that leverages the artificial intelligence (AI) assistant's implicit trust in Markdown links and images to trigger prompt injections ... Read More Attackers Use LLM Agent for Post-Exploitation After Marimo CVE-2026-39987 Exploit An unknown threat actor has been observed using a large language model (LLM) agent to conduct post-compromise actions after obtaining initial access following the exploitation of a publicly-accessible Marimo network u... Read More New Russia-Linked GREYVIBE Targets Ukraine with AI-Powered Cyberattacks A previously undocumented threat actor dubbed GREYVIBE has been attributed to ongoing and persistent attacks targeting Ukraine and Ukraine-related entities since at least August 2025. GREYVIBE, per WithSecure, is asses... Read More What 2,000 Exposed Vibe-Coded Apps Reveal About the Limits of Most Security Stacks Shadow AI used to mean employees pasting things they shouldn't into ChatGPT. It now means something bigger: employees building full applications with AI, wiring them into production systems, and publishing them on the o... Read More Malicious Sicoob NuGet Steals Banking Credentials as npm Packages Target Cloud Secrets Cybersecurity researchers have discovered a malicious NuGet package that masquerades as a C# software development kit for Sicoob, one of Brazil's largest cooperative financial systems, to siphon client IDs and PFX certi... Read More Kimsuky Deploys HTTPSpy, Expands Arsenal with HelloDoor and VS Code Tunnels The North Korean state-sponsored threat actor known as Kimsuky (aka Velvet Chollima) has been attributed to a fresh set of cyber attacks targeting South Korean military and corporate entities through March and April 2... Read More Cybersecurity Risk Management: Mastering the Fundamentals Using the NIST Cybersecurity Framework ($115.95 Value) FREE for a Limited Time Cybersecurity Risk Management Download Now Sponsored This email was sent to sikubaycom.s3cr3tz@blogger.com. You are receiving this newsletter because you opted-in to receive relevant communications from THN. To manage your email newsletter preferences, please click here. Contact THN: info@thehackernews.com Unsubscribe THN | K.P BLock, Pitampura, Delhi