Development & Open Source
Software development and open source follows supply chain, dependencies, tooling, repositories and code security. The cluster highlights vulnerabilities, updates and useful practices for developers and maintainers.

Operation Muck and Load: 222 GitHub Repositories Weaponized to Distribute Windows Malware
A threat actor built a network of 222 GitHub repositories across 190 accounts to distribute Windows malware via malicious Go modules.…

CISA Orders 3-Day Patch for CVE-2026-55255 in Langflow
An IDOR in Langflow's /api/v1/responses endpoint lets authenticated attackers steal LLM and cloud credentials from other users' flows.…

GhostLock: 15-Year Linux Kernel Bug Now Publicly Exploitable, Guarantees Root
CVE-2026-43499 enables root escalation and container escape on nearly every Linux distribution since 2011. Nebula Security published t…

X.Org Server: A Forgotten Bug Returns as Privilege Escalation — The ZDI-26-395 Case
A use-after-free flaw in SyncChangeCounter enables local privilege escalation to root on X.Org Server. The bug mirrors a pattern alrea…

Exploitarium: The Speed Paradox — Public Exploits for Already-Patched Flaws
Pseudonymous researcher 'bikini' dumped 30+ zero-day PoCs on GitHub without coordinated disclosure. CVE-2026-55200 in libssh2 had a fi…

Januscape: 16-Year-Old KVM Bug Enables Guest-to-Host Escape on Intel and AMD
CVE-2026-53359 strikes the shared shadow MMU code in Linux KVM used by both Intel and AMD. The flaw has existed since 2010 and require…

Cisco Talos Releases ClamAV 1.5.3 and 1.4.5: Seven Legacy Vulnerabilities Patched
ClamAV 1.5.3 and 1.4.5 address vulnerabilities in PE file, archive, and disk image parsers. Two bugs survived roughly 20 years in crit…

Bad Epoll: Linux Kernel Bug Roots Android, Escapes Chrome Sandbox
CVE-2026-46242 is a race condition in the Linux kernel's epoll subsystem that allows an unprivileged user to gain root privileges. The…

ZDI-26-396: Reversed Operator in X.Org Server Opens Door to Arbitrary Read
An elementary coding error in X.Org Server allows out-of-bounds reads with potential escalation: the details of ZDI-26-396.

ChocoPoC RAT: How Fake PoCs on PyPI Infected Vulnerability Researchers
ChocoPoC, a Python RAT, spreads via GitHub repositories posing as proof-of-concept exploits that hide the payload in transitive PyPI d…

ClickFix Evolves Into a Platform: Analysis of 3,000 Payloads Reveals API-Driven Delivery
A researcher analyzed 3,000 live ClickFix payloads, uncovering an API-driven architecture, rotating cryptographic wrappers, and adopti…

Agentjacking: Fake Bug Report Hijacks AI Coding Agents, 85% Success Rate
Tenet Security researchers demonstrated on June 12, 2026 that a poisoned Sentry error report can hijack Claude Code, Cursor, and Codex…