VulnCheck reports that attackers are actively exploiting an unpatched flaw in Langflow, a popular open-source platform for building AI applications. The bug (CVE-2026-5027, rated 8.8) is a path-traversal weakness: the file-upload endpoint does not clean the supplied filename, so an attacker can use directory-climbing sequences to write files anywhere on the server, a foothold that leads to remote code execution. Tenable, which found it, says the maintainers did not respond after three contact attempts in early 2026, and there is still no official fix. Early exploitation appears to be probing, with attackers writing harmless test files, but that usually precedes heavier attacks.
Microsoft has shipped the first full patch for an Exchange Server zero-day that attackers have been exploiting since May. The flaw (CVE-2026-42897) is a cross-site scripting bug in Outlook Web Access: an attacker emails a victim, and when the message is opened in OWA, malicious JavaScript runs inside the victim's authenticated session, allowing session-token theft and mailbox impersonation without ever touching the server. It affects Exchange Server 2016, 2019, and Subscription Edition, and CISA added it to its known-exploited list back in May. Until this week only temporary mitigations existed; the June security updates provide the permanent fix.
Ivanti has patched two critical flaws in Sentry, its mobile gateway appliance (formerly MobileIron Sentry) that sits in line between mobile devices and back-end systems like Exchange. The worst, CVE-2026-10520, rated a perfect 10, is an OS command injection in an internal configuration API that mistakenly accepts commands from anyone who can reach it over the internet, with no login, granting remote code execution as root. The second, CVE-2026-10523 (9.9), is an authentication bypass that lets attackers create their own admin accounts. No exploitation has been seen yet, but watchTowr has already published a patch analysis and a detection script, so the window is closing fast.
The extortion group ShinyHunters is running a wave of data-theft attacks against organizations using Oracle PeopleSoft, the enterprise software that large institutions rely on for HR, payroll, finance, and student records. Both cloud and on-premises instances are affected, and the gang claims data from more than 100 organizations. Attackers typically log in with stolen employee credentials, move through the PeopleSoft environment, and exfiltrate large datasets before demanding a Bitcoin ransom. A confirmed victim is the University of Nottingham, where a breach of an Oracle student-records system exposed 454,635 accounts. Researchers have shared attacker IP addresses and noted the use of MeshCentral remote-access agents.
Lumen's Black Lotus Labs warns that JDY, a covert botnet tied to Chinese state-linked groups including Volt Typhoon, has more than doubled to over 1,500 hacked home and small-office routers, firewalls, and IoT devices. Unlike a DDoS botnet, JDY is a distributed scanning network: it fingerprints exposed services across the internet and flags systems vulnerable to newly disclosed bugs, often within hours of disclosure. It keeps a heavy focus on the US, especially military and associated networks, and survived the 2024 FBI takedown of its parent KV-botnet. Because traffic comes from thousands of ordinary residential IPs, simple IP blocking does not stop it.
Researchers at Cyera have disclosed six vulnerabilities, collectively named Proto6, in protobuf.js, a JavaScript and TypeScript library for Google's Protocol Buffers data format that sees more than 50 million downloads a week. The flaws stem from the library trusting schema and metadata by default, so a single malicious schema or crafted payload can crash a service, inject code, or lead to remote code execution. Cyera demonstrated real attacks including poisoning CI/CD pipelines to leak build secrets and crashing WhatsApp automation bots. Because protobuf.js is embedded across cloud services, AI platforms, and build systems, the reach is broad. Fixed versions are 7.5.6 and 8.0.2.
Mackay Sugar, Australia's second-largest sugar producer, has shut down two of its Queensland mills after a cybersecurity incident, halting production and stopping sugarcane harvesting at the peak of the season. The company confirmed the attack on Wednesday and has brought in outside cybersecurity experts and local authorities to investigate and restore systems. It has not yet said who was responsible or whether data was stolen, but the operational shutdown is consistent with a ransomware attack. The incident is the latest example of attackers disrupting food and agriculture operations, a sector whose industrial systems are increasingly targeted for maximum pressure.
Microsoft's June 2026 Patch Tuesday is the largest on record, fixing more than 200 vulnerabilities (independent counts put the total above 206), including three publicly disclosed zero-days that are not yet being exploited. The standout is CVE-2026-45586, a Windows CTFMON elevation-of-privilege flaw that grants SYSTEM access, which matches the GreenPlasma bug a researcher dropped in protest of Microsoft's bug-bounty handling; a BitLocker bypass called YellowKey was also fixed. The update includes 33 critical flaws, most of them remote code execution, hitting Remote Desktop, Hyper-V, Office, and cryptographic services. Microsoft flagged 15 issues as more likely to be exploited soon.
Hours after Patch Tuesday, the researcher known as Nightmare Eclipse published a working exploit, dubbed RoguePlanet, for an unpatched Microsoft Defender flaw that opens a command prompt with full SYSTEM privileges on fully updated Windows 10 and 11. The bug is a race condition, so the exploit is hit or miss, but the researcher reports a 100 percent success rate on some machines. They posted the proof-of-concept on a self-hosted Git server after Microsoft had earlier taken down their GitHub and GitLab repositories. It is the latest in a string of Windows zero-days (BlueHammer, RedSun, YellowKey, GreenPlasma) the researcher has released in protest of Microsoft's disclosure practices.
Google has shipped an emergency Chrome fix for a zero-day in V8, the browser's JavaScript and WebAssembly engine, that attackers are already exploiting in the wild. The flaw (CVE-2026-11645, rated 8.8) is an out-of-bounds memory read and write that lets a malicious web page run code inside Chrome's sandbox, and can help defeat protections like ASLR to set up a fuller compromise. Google confirmed an exploit exists but withheld details until most users update. It is the fifth actively exploited Chrome zero-day of 2026. The fix is in Chrome 149.0.7827.102/103 for desktop; Chromium-based browsers like Edge and Brave need the same update.
TrustStrike Labs