An automated roundup of 9 notable cybersecurity article(s) from the last 36 hours, aggregated from 3 source(s). Descriptions are pulled directly from each publisher's feed; follow the links for the full articles.
BleepingComputer
OpenAI is preparing “o,” an always-on ChatGPT assistant that could handle email
OpenAI is testing a new always-on assistant called "o", and references to the unannounced feature briefly showed up on the company's website. [...]
Citrix confirms two NetScaler RCE zero-days exploited in attacks
Citrix has confirmed that two critical NetScaler remote code execution vulnerabilities, tracked as CVE-2026-88771 and CVE-2026-88772, are being exploited in attacks and that it has released security updates to fix the flaws. [...]
Cloudflare fixes Containers cross-tenant flaw exposing customer data
Cloudflare has fixed a vulnerability in Containers and Sandboxes that allowed customers with a Workers Paid account to recover residual data from other customers' containers on the same physical host. [...]
Anthropic turns Claude into an AI marketplace with 2,000+ plugins and connectors
Anthropic has just announced a new Claude Marketplace, and it brings all AI-related tools into one place, including plugins, connectors, agents, and more. [...]
ShinyHunters uses WAF bypass trick in Oracle PeopleSoft attacks
The ShinyHunters extortion gang is using a URL-encoding trick to bypass web application firewall rules that mitigate the Oracle PeopleSoft CVE-2026-35273 flaw, allowing the threat actors to resume widespread exploitation of a flaw on vulnerable servers. [...]
The Hacker News
Warning: Two Unpatched Citrix NetScaler RCE Zero-Days Under Active Exploitation
Two critical vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway that allow remote code execution have been exploited in the wild, Citrix confirmed on September 27. It released fixes for both, along with six other flaws. One of the two affects every deployment on an…
Lunex Stealer Abuses AMD Driver to Disable Security Monitoring and Steal Browser Credentials
The Psychedelic Stealer malware distributed via compromised Ukrainian websites using ClickFix-style Cloudflare verification checks is part of a wider malware-as-a-service (MaaS) platform called Lunex. The new findings come from Ontinue, which described the activity as a…
SANS Internet Storm Center
Wireshark 4.6.9 Released, (Sun, Sep 27th)
Wireshark release 4.6.9 fixes 19 vulnerabilities and 16 bugs.
Not included today: Krebs on Security (no articles in the last 36h); Dark Reading (no articles in the last 36h)