CVE-2026-41940 on DanSec Daily

Cybersecurity Brief – 2026-05-12

Tue, 12 May 2026 00:00:00 +0000

Major Incidents or Breaches

Instructure (Canvas): Instructure, the parent company of Canvas, confirmed a significant breach involving the theft of 3.65TB of data by the ShinyHunters extortion group. The breach exploited a vulnerability in Canvas, which allowed attackers to deface login portals and leave extortion messages. Instructure reached a ransom agreement with the attackers to prevent further data leaks, and claims the stolen data was “returned.”
TanStack, Mistral AI, Guardrails AI, UiPath, OpenSearch: Multiple popular npm and PyPI packages were compromised in a supply chain attack orchestrated by the threat actor TeamPCP. The attack also included a rogue version of the Checkmarx Jenkins AST plugin, which contained an infostealer.
Skoda: Hackers exploited a portal vulnerability to access customer data from Skoda’s online shop, including names, addresses, email addresses, and phone numbers.
SailPoint: SailPoint disclosed a GitHub repository breach on 20 April. No customer data in production or staging environments was affected.
cPanel: A threat actor known as Mr_Rot13 is actively exploiting CVE-2026-41940, a critical cPanel vulnerability, to deploy the Filemanager backdoor on compromised systems.

Newly Discovered Vulnerabilities

cPanel CVE-2026-41940: This critical flaw is under active exploitation to install persistent backdoors.
Canvas LMS: A vulnerability in Instructure’s Canvas platform allowed attackers to modify login portals and deliver extortion messages.
Yarbo Garden Robots: Multiple vulnerabilities in Yarbo garden robots could allow attackers to expose Wi-Fi credentials, hijack cameras, and physically control the devices.
“Dirty Frag” Linux Privilege Escalation: A new privilege escalation vulnerability, similar to Copy Fail and Dirty Pipe, is affecting enterprise Linux distributions and may already be under limited exploitation.

Notable Threat Actor Activity

TeamPCP: Conducted a series of supply chain attacks compromising npm and PyPI packages associated with TanStack, UiPath, Mistral AI, OpenSearch, Guardrails AI, and the Checkmarx Jenkins AST plugin.
ShinyHunters: Responsible for the Instructure (Canvas) breach, extorting the company and negotiating a ransom to prevent data leaks.
Mr_Rot13: Attributed to the exploitation of the cPanel CVE-2026-41940 vulnerability.
Unnamed Cyber Espionage Group: Targeted aviation and drone firms to exfiltrate GIS files, terrain models, and GPS data.

Trends, Tools, or Tactics of Interest

Ransomware Evolution: Kaspersky reports a shift in ransomware tactics for 2026, including increased use of EDR killers and a move from data encryption to data leak extortion.
AI in Exploit Development: Google and other sources confirm the first known use of AI to develop a zero-day exploit capable of mass 2FA bypass and targeting a popular open-source web admin tool. Attack automation and exploit orchestration via large language models are increasing.
Supply Chain Attacks: Continued targeting of software supply chains, including poisoning trusted packages and plugins.
GhostLock Tool: A new proof-of-concept tool demonstrates how Windows file APIs can be abused to block access to local or network files.
Application Build Firewalls: New security solutions are emerging to monitor runtime behaviour within build pipelines to prevent supply chain attacks.
Insider Threats: Research indicates that 1 in 8 employees have sold or know someone who has sold company logins.
Purple Teaming: Observations highlight ongoing operational challenges in integrating red and blue team functions in practice.

Regulatory or Policy Developments Affecting the Security Industry

GM California Settlement: General Motors agreed to a $12.75 million settlement with California authorities for alleged violations of the California Consumer Privacy Act related to the sale of drivers’ data.
FCC Router Ban: The US Federal Communications Commission has eased some restrictions and extended deadlines for foreign-made routers, though the ban remains in effect.
iOS 26.5 Release: Apple released iOS 26.5, introducing default end-to-end encrypted RCS messaging between iPhone and Android devices in beta, as part of a cross-industry initiative to replace SMS/MMS.

Cybersecurity Brief – 2026-05-05

Tue, 05 May 2026 00:00:00 +0000

Major Incidents or Breaches

Trellix disclosed a data breach following unauthorised access to a portion of its source code repository. The investigation found no impact on source code release or distribution processes.
DigiCert revoked certificates after hackers exploited a customer chat channel to deliver malware, infect an analyst’s system, and access the internal support portal.
Over 40,000 servers have been compromised in ongoing exploitation of a critical cPanel vulnerability (CVE-2026-41940), with attacks targeting government, military, managed service providers (MSPs), and hosting providers in Southeast Asia.
Medtronic, a global medical device manufacturer, disclosed a security incident, as referenced in Check Point’s latest threat intelligence bulletin.

Newly Discovered Vulnerabilities

A critical remote code execution vulnerability (CVE-2026-22679) in Weaver (Fanwei) E-cology office automation software has been under active exploitation since March 2026.
Progress Software patched two security flaws in MOVEit Automation, including a critical authentication bypass vulnerability. Customers have been urged to apply updates immediately.
The “Copy Fail” Linux vulnerability is now being actively exploited in the wild. CISA has added it to its Known Exploited Vulnerabilities (KEV) list, and Microsoft has observed limited exploitation linked to proof-of-concept testing.

Notable Threat Actor Activity

The China-based group Silver Fox has been linked to a campaign targeting organisations in India and Russia using tax-themed phishing emails to deliver the new ABCDoor malware, as well as ValleyRAT and Sainbox malware.
A previously unknown threat actor has been exploiting the cPanel authentication-bypass vulnerability to target government, military, MSP, and hosting provider networks, with evidence of zero-day activity prior to public disclosure.

Trends, Tools, or Tactics of Interest

Attackers are increasingly abusing Amazon Simple Email Service (SES) and Google AppSheet to send phishing emails that bypass standard security filters, making detection more challenging.
Multiple large-scale phishing campaigns are leveraging legitimate remote monitoring and management (RMM) tools such as SimpleHelp and ScreenConnect to establish persistent remote access, impacting over 80 organisations since April 2025.
Microsoft detailed a phishing campaign targeting 35,000 users across 26 countries using code of conduct-themed lures and legitimate email services for credential theft.
A malicious version of the PyTorch Lightning package was published on PyPI, delivering a credential-stealing payload targeting browsers, environment files, and cloud services.
Deepfake-driven fraud has resulted in $2.19 billion in global losses, with the majority attributed to investment scams.
Fraudsters are exploiting legitimate business processes at credit unions using structured loan fraud and stolen identities, rather than direct hacking.
The 2026 World Cup is being leveraged in a multi-faceted scam economy involving fake visas, fraudulent tokens, and other schemes.
AI-assisted attacks are on the rise, with increased use of artificial intelligence to enhance phishing and other malicious activities.
Thousands of Facebook accounts have been compromised through phishing emails sent via Google services, evading standard email security controls.

Regulatory or Policy Developments Affecting the Security Industry

CISA added the “Copy Fail” Linux vulnerability to its Known Exploited Vulnerabilities (KEV) list, mandating federal agencies to mitigate the issue.
OpenAI introduced Advanced Account Security for ChatGPT accounts, including stronger login methods, improved account recovery, and training data exclusion.
Cisco announced the acquisition of Astrix Security to strengthen its capabilities around non-human identity risks, particularly for AI and machine access.

Cybersecurity Brief – 2026-05-03

Sun, 03 May 2026 00:00:00 +0000

Major Incidents or Breaches

The “Sorry” ransomware group is conducting mass exploitation of a critical cPanel vulnerability (CVE-2026-41940) to breach websites and encrypt data.

Newly Discovered Vulnerabilities

CISA has added CVE-2026-31431, a Linux root access vulnerability, to its Known Exploited Vulnerabilities (KEV) catalog. The flaw impacts multiple Linux distributions and is currently being actively exploited.

Notable Threat Actor Activity

A Finnish teenager has been formally charged in connection with the Scattered Spider hacking spree.
The “Sorry” ransomware group is actively exploiting the cPanel vulnerability (CVE-2026-41940) in widespread attacks.

Trends, Tools, or Tactics of Interest

A new phishing kit called Bluekit, still under development, includes automated domain registration features and an integrated AI assistant to aid attackers.
“ConsentFix v3” attacks are targeting Azure environments by automating OAuth abuse at scale, with the technique being circulated on hacker forums.
Disneyland has introduced facial recognition technology for visitor identification.
The NSA is testing Anthropic’s Mythos Preview tool to identify vulnerabilities.

Cybersecurity Brief – 2026-05-01

Fri, 01 May 2026 00:00:00 +0000

Major Incidents or Breaches

Hundreds of thousands of Roblox accounts were compromised through fake “game enhancements” that harvested login credentials, with stolen accounts subsequently sold for profit.
90,000 screenshots, including private messages and photos, from a European celebrity’s smartphone were publicly exposed due to spyware, before being reported and taken down.
A critical authentication bypass vulnerability (CVE-2026-41940) in cPanel, WHM, and WP Squared has been actively exploited as a zero-day since late February, granting attackers administrative access to servers. Proof-of-concept code is publicly available.
Several npm packages for SAP’s cloud application ecosystem were compromised in a supply chain attack (“Mini Shai-Hulud”), impacting at least 1,800 downstream projects.
The Lightning Python package and Intercom-client were compromised on PyPI, with malicious versions published to steal credentials. Combined, these packages have nearly 10 million monthly downloads.
A Brazilian anti-DDoS firm was found to be enabling a botnet that conducted large-scale DDoS attacks against Brazilian ISPs.
The FBI reported a sharp surge in cyber-enabled cargo theft attacks targeting transportation and logistics in the US and Canada, with losses exceeding $30 million in 2023.
Law enforcement dismantled nine cryptocurrency investment scam centers, arresting 276 suspects in a joint operation involving US and Chinese authorities.
PayPal email systems are being abused to distribute tech support scams by hijacking legitimate emails.
Two former US ransomware negotiators were sentenced to four years in prison each for their role in facilitating BlackCat (ALPHV) ransomware attacks against US companies.
The leader of an online swatting ring, responsible for targeting over 75 officials and institutions, was sentenced to four years in US federal prison.

Newly Discovered Vulnerabilities

A high-severity local privilege escalation vulnerability (“Copy Fail”) in the Linux kernel, introduced in 2017, allows unprivileged local attackers to gain root access on major distributions. Exploit code is public and patches are available.
Critical vulnerabilities in SonicWall firewalls could allow attackers to bypass security controls, access restricted services, or crash the devices. SonicWall has urged immediate patching.
Two vulnerabilities in EnOcean SmartServer could allow security bypass and remote code execution on building management systems.
A critical flaw in the Gemini CLI allowed attackers to execute arbitrary commands on the host via malicious configuration files, enabling supply chain attacks. The issue has been patched.
The April 2026 KB5083769 Windows 11 update causes failures in third-party backup applications for versions 24H2 and 25H2.
OpenEMR, a widely used open-source medical records system, was reported to have newly discovered vulnerabilities, though details remain limited.

Notable Threat Actor Activity

Iran-linked hackers are targeting critical infrastructure sectors in the US.
The TeamPCP threat group broadened its supply chain attacks, targeting npm packages used in SAP’s cloud development ecosystem.
A sophisticated campaign distributing EtherRAT malware is spoofing administrative tools on GitHub to target high-privilege professional accounts.
Threat actors compromised Lightning and Intercom-client Python packages to steal credentials in a coordinated supply chain attack.
A new Python-based backdoor framework, DEEP#DOOR, was discovered. It leverages tunneling services for persistence and credential theft from browsers and cloud services.
Criminals are using fake cell towers to send scam SMS messages at scale.
A new phishing kit, Bluekit, offers more than 40 templates targeting popular services and integrates basic AI features to assist in campaign creation.

Trends, Tools, or Tactics of Interest

AI is accelerating the speed and scale of cybercrime, with time-to-exploit for new vulnerabilities shrinking to hours. Attackers are increasingly automating scanning and exploitation of newly exposed assets.
AI-assisted software scanning continues to identify longstanding vulnerabilities, with a recent scan uncovering a nine-year-old Linux bug.
There is a growing use of AI in phishing operations, as demonstrated by the Bluekit phishing service.
Attackers begin scanning and targeting new internet-facing assets within minutes of deployment, with compromise attempts occurring within the first 24 hours.
Helpdesk impersonation scams are increasing, exploiting human factors in security.
Abuse of legitimate communications platforms (such as PayPal emails) to deliver scams is ongoing.
DDoS-for-hire services and botnet-enabled attacks remain prevalent, with some security firms implicated in facilitating these attacks.

Regulatory or Policy Developments Affecting the Security Industry

OpenAI has introduced an “Advanced Account Security” mode for at-risk ChatGPT and Codex accounts, aimed at mitigating phishing and account takeover risks.
Anthropic launched “Claude Security” to help defenders respond to the increased risk of AI-powered exploits, particularly as its new AI model, Mythos, is expected to impact cybersecurity operations.