https://blog.dansec.red/vendors/libssh2/Recent content in libssh2 on DanSec DailyHugoen-gbMon, 29 Jun 2026 00:00:00 +0000https://blog.dansec.red/posts/2026-06-29-cybersecurity-news/Mon, 29 Jun 2026 00:00:00 +0000https://blog.dansec.red/posts/2026-06-29-cybersecurity-news/<h2 id="major-incidents-or-breaches">Major Incidents or Breaches</h2> <ul> <li>Japanese telecommunications operator KDDI Corporation disclosed a data breach impacting an email system used by five additional internet service providers, exposing up to 14.2 million email logins to threat actors <sup class="citation"><a href="https://www.bleepingcomputer.com/news/security/data-breach-exposes-up-to-142-million-email-logins-at-six-isps/" title="Data breach exposes up to 14.2 million email logins at six ISPs - bleepingcomputer.com" target="_blank" rel="noopener">[3]</a></sup>.</li> </ul> <h2 id="newly-discovered-vulnerabilities">Newly Discovered Vulnerabilities</h2> <ul> <li>A public proof-of-concept exploit has been released for CVE-2026-55200, a critical client-side flaw in libssh2 that allows a malicious or compromised SSH server to trigger memory corruption on connecting clients, potentially leading to code execution <sup class="citation"><a href="https://thehackernews.com/2026/06/public-poc-released-for-critical.html" title="Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw - thehackernews.com" target="_blank" rel="noopener">[1]</a></sup>.</li> </ul> <h2 id="notable-threat-actor-activity">Notable Threat Actor Activity</h2> <ul> <li>Researchers identified hijacked npm and Go packages designed to deploy a Python-based information stealer via Visual Studio Code tasks, targeting Windows, Linux, and macOS environments <sup class="citation"><a href="https://thehackernews.com/2026/06/hijacked-npm-and-go-packages-use-vs.html" title="Hijacked npm and Go Packages Use VS Code Tasks to Deploy Python Infostealer - thehackernews.com" target="_blank" rel="noopener">[2]</a></sup>.</li> </ul> <h2 id="trends-tools-or-tactics-of-interest">Trends, Tools, or Tactics of Interest</h2> <ul> <li>OpenAI announced the release of GPT-5.6 Sol, its most advanced cybersecurity AI model, claiming comparable performance to competing systems while using fewer output tokens <sup class="citation"><a href="https://www.securityweek.com/openai-unveils-gpt-5-6-sol-as-its-most-advanced-cybersecurity-ai/" title="OpenAI Unveils GPT-5.6 Sol as Its Most Advanced Cybersecurity AI - securityweek.com" target="_blank" rel="noopener">[5]</a></sup>.</li> </ul> <hr> <h3 id="sources">Sources</h3> <ol class="sources"> <li id="src-3"><a href="https://www.bleepingcomputer.com/news/security/data-breach-exposes-up-to-142-million-email-logins-at-six-isps/" title="Data breach exposes up to 14.2 million email logins at six ISPs - bleepingcomputer.com" target="_blank" rel="noopener">Data breach exposes up to 14.2 million email logins at six ISPs</a> <span class="source-host">- bleepingcomputer.com</span></li> <li id="src-1"><a href="https://thehackernews.com/2026/06/public-poc-released-for-critical.html" title="Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw - thehackernews.com" target="_blank" rel="noopener">Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw</a> <span class="source-host">- thehackernews.com</span></li> <li id="src-2"><a href="https://thehackernews.com/2026/06/hijacked-npm-and-go-packages-use-vs.html" title="Hijacked npm and Go Packages Use VS Code Tasks to Deploy Python Infostealer - thehackernews.com" target="_blank" rel="noopener">Hijacked npm and Go Packages Use VS Code Tasks to Deploy Python Infostealer</a> <span class="source-host">- thehackernews.com</span></li> <li id="src-5"><a href="https://www.securityweek.com/openai-unveils-gpt-5-6-sol-as-its-most-advanced-cybersecurity-ai/" title="OpenAI Unveils GPT-5.6 Sol as Its Most Advanced Cybersecurity AI - securityweek.com" target="_blank" rel="noopener">OpenAI Unveils GPT-5.6 Sol as Its Most Advanced Cybersecurity AI</a> <span class="source-host">- securityweek.com</span></li> </ol>