September 2026 – Page 21

Critical Next.js ImageResponse Flaw Can Lead to Server Code Execution via Crafted SVG Input

A new security vulnerability in Next.js could allow attackers to run code on a server via ImageResponse, the feature that generates Open Graph and other social preview images, Vercel said.

The risk applies when an app puts values an attacker controls, such as text read from the request URL, into the image. Vercel, which develops Next.js, fixed the flaw on September 22 in version

Check Point Patches Exploited Management Server Zero-Day

The critical-severity flaw could allow unauthenticated attackers to upload and execute arbitrary scripts.

The post Check Point Patches Exploited Management Server Zero-Day appeared first on SecurityWeek.

ShinyHunters Claims FBI Breach, Says It Stole Data on Agents and Job Applicants

The cyber extortion group known as ShinyHunters on Tuesday claimed it had breached the U.S. Federal Bureau of Investigation and stolen data belonging to current and former employees at the agency.

“We have compromised the FBI. We hold very sensitive data on almost ALL FBI Agents and individuals who filed an application with the FBI for a job,” the group said in a statement posted on their dark

Rogue external MFA providers can steal passwords during logins

Security researchers developed an attack that lets hackers with privileged access register a rogue external MFA provider that steals users’ passwords during legitimate login attempts. […]

Sweden fines Miljödata $183,000 over breach affecting 2.2 million

Sweden’s data privacy regulator, IMY, has imposed a $183,000 (SEK 1.8 million) fine on IT systems provider Miljödata for inadequate security measures leading to a breach in August 2025 affecting 2.2 million people. […]

Chinese hackers exploit multiple technologies to steal govt data

A Chinese-speaking threat actor has been exploiting vulnerabilities in ZyXEL GS1900 Smart Managed Switches and WordPress to steal sensitive data from 996 devices and more than 18,500 records stored in backend databases. […]

ShinyHunters claims FBI hack, data theft in PeopleSoft zero-day breach

The ShinyHunters extortion gang claims it breached FBI systems using a new Oracle PeopleSoft zero-day vulnerability, gaining access to internal services and stealing sensitive data on employees and job applicants. […]

Check Point Warns of Management Server Zero-Day Exploited in Targeted Attacks

Attackers exploited a previously unknown flaw in Check Point’s Security Management Server in a handful of targeted attacks on July 23, the company said.

The flaw, CVE-2026-93616, allows an attacker who can access the server’s web service to run scripts on it without logging in. Check Point released a fix on September 22 for the server that controls firewall policies for the Check Point

New ClosedQuorum Windows malware uses AI for attack decisions

A new Windows malware named ClosedQuorum uses Google Gemini, DeepSeek, Qwen, and Mistral AI models to autonomously determine the actions to take during post-compromise stages of an attack. […]

WordPress Issues Patch for Critical Flaw That Can Enable Code Execution on Some Servers

WordPress has fixed a critical flaw in its core software that lets an attacker with no account make a site load a PHP file from outside its theme folders.

On some servers, that can go further, allowing the attacker to run their own code. The fix shipped on September 22 in WordPress 7.1.2, with fixes for every branch the project still supports, back to 4.7, and WordPress is telling site owners

Month: September 2026