Qianxin XLab has documented a large-scale ClickFix campaign exploiting CVE-2026-26980, an SQL injection in Ghost CMS that was disclosed and patched on February 19. The vulnerability lets unauthenticated attackers read arbitrary database content including admin API keys, which are then used to inject malicious JavaScript into articles. More than 700 domains are confirmed compromised, including Harvard, Oxford, and Auburn universities and DuckDuckGo. Victim browsers receive a fingerprinted iframe overlay impersonating a Cloudflare prompt that instructs users to paste a command into the Windows command prompt, dropping DLL loaders, JS droppers, or the UtilifySetup.exe Electron-based payload. Two distinct activity clusters compete for compromised sites.
Anthropic has named the program behind its Claude Mythos Preview model 'Project Glasswing' and disclosed the first-month results. Working with AWS, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks, the program flagged 6,202 high or critical vulnerability candidates across 1,000+ open-source projects; 1,726 were validated by human reviewers and 1,094 confirmed as genuine high or critical severity. A WolfSSL certificate-forgery flaw (CVE-2026-5194, CVSS 9.1) is the named-and-shamed example. 97 upstream patches and 88 security advisories have landed. Anthropic itself warns that finding flaws is far easier than fixing them.
Socket has detailed a coordinated supply-chain campaign that planted malicious code in eight Composer packages on Packagist, including moritz-sauer-13/silverstripe-cms-theme, crosiersource/crosierlib-base, devdojo/wave, devdojo/genesis, katanaui/katana, elitedevsquad/sidecar-laravel, r2luna/brain, and baskarcm/tzi-chat-ui. The attackers placed the payload not in composer.json but in package.json - meaning teams scanning only PHP dependencies would miss the Node.js lifecycle hook bundled inside. The postinstall script downloads a Linux binary from a GitHub Releases URL (github[.]com/parikhpreyash4/systemd-network-helper-aa5c751f), saves it as /tmp/.sshd, and runs it backgrounded with execute permissions. Socket found the same payload referenced in 777 GitHub files, including two GitHub Actions workflows - hinting at a broader campaign.
GitHub has shipped npm CLI 11.15.0 introducing a 'staging' workflow that lets maintainers run 'npm stage publish' to push a candidate to a staging area before going live - with the constraint that the package must already exist on the registry and have 2FA enabled on the account. Three new install flags (--allow-file, --allow-remote, --allow-directory) extend the existing --allow-git to give developers an explicit allowlist for every non-registry install source. GitHub is also encouraging maintainers to pair staging with trusted publishing via OIDC. The changes respond to the TeamPCP supply-chain wave that compromised hundreds of packages over the past several weeks.
The FBI has issued a warning about Kali365, a phishing-as-a-service platform that fueled large Microsoft 365 attacks in April. Instead of stealing passwords, Kali365 customers trigger Microsoft device-login requests and trick victims into completing the authorization, capturing OAuth access and refresh tokens that grant immediate mailbox access. Arctic Wolf, which infiltrated the system, says Kali365 sells in three tiers from $250 for 30 days to $2,000 for the year and generates branded phishing lures impersonating Adobe, DocuSign, and SharePoint in dozens of languages. Threat actors set malicious inbox rules to suppress security notifications and extend dwell time.
Italian Guardia di Finanza has dismantled CINEMAGOAL, an unusual piracy operation whose customers installed an app on their devices that authenticated directly to legitimate Netflix, Disney+, Spotify, Sky, and DAZN. A network of virtual machines in Italy captured fresh authentication and decryption codes from real subscriptions (opened under false identities) every three minutes and redistributed them to subscribers, who streamed at full quality with their real IPs masked. Operation 'Tutto Chiaro' executed 100 searches across Italy, seized servers in France and Germany, and identified about 70 resellers. The first 1,000 subscribers have been fined between €154 and €5,000.
Drupal has issued an update to its highly critical PSA-2026-05-18 advisory confirming that exploit attempts for CVE-2026-9082 are now being detected in the wild. The bug is an SQL injection in Drupal's database abstraction API that lets unauthenticated requests trigger arbitrary SQL on sites running PostgreSQL, with possible escalation to RCE, privilege escalation, and information disclosure. Drupal rates it 23 out of 25 internally though NIST's CVSS v3 score is a mismatched 6.5. CISA added it to KEV on May 22. Affected versions cover Drupal 8.9.x and all 10.x and 11.x branches up to 10.4.10, 10.5.10, 10.6.9, 11.1.10, 11.2.12, and 11.3.10.
A week after CISA was first notified of credentials leaking from its Private-CISA GitHub repository, the agency is still working to invalidate and replace many of the exposed keys, according to TruffleHog creator Dylan Ayrey. On May 19, Senator Maggie Hassan and Representatives Bennie Thompson and Delia Ramirez sent letters demanding answers, noting CISA has lost a third of its workforce and almost all senior leaders to forced retirements and buyouts. An RSA private key giving full read access to every CISA-IT GitHub repository was still active when Ayrey re-tested on May 20; CISA rotated it after KrebsOnSecurity's notification, but other critical credentials reportedly remain unrotated.
Anthropic has unveiled Claude Mythos Preview, a research-only AI model purpose-built for security tasks, and disclosed that it has used the model to find more than 10,000 high-severity vulnerabilities in widely used open-source and commercial software. Mythos has also been adapted to build end-to-end exploit chains and, in one Glasswing partner-bank case, helped block a $1.5 million fraudulent wire transfer. Anthropic is urging defenders to shorten patch windows because models with similar capability will soon be broadly available. It has launched a Cyber Verification Program that lets vetted researchers use the model without guardrails for legitimate vulnerability research, red teaming, and penetration testing.
Aikido Security and Socket have disclosed that several packages in the Laravel-Lang PHP ecosystem were compromised and used to ship a ~5,900-line PHP credential stealer that runs automatically the moment any consumer of the package boots. The dropper registers itself in composer.json under autoload.files, so no class instantiation or method call is needed - the payload triggers on every PHP request. It harvests AWS, Azure, GCP, Kubernetes, HashiCorp Vault, Jenkins, GitLab, GitHub Actions, CircleCI, browser data, password-manager vaults, SSH keys, crypto wallets, and VPN configs, then AES-encrypts the bundle and exfiltrates to flipboxstudio[.]info/exfil. The script then deletes itself to limit forensic recovery.
TrustStrike Labs