InfoSecBulletin Cybersecurity for mankind
Brief description of the vulnerabilities is as follows:
Hackers Exploit Zimbra Mail Servers: TeamViewer patched 5 critical flaws
Google Warns of Hackers Actively Exploiting Citrix 0-Day Flaws
CISA Warns Critical MikroTik RouterOS Flaw While Cisco SD-WAN Zero-Day Exploited in Attacks
Apple Zero-Day Exploited: Pentagon Data Breach Reportedly Exposes Sensitive Data of 3 Million People
JadePuffer Agentic AI targets and destroys Azure’s cloud resources
“InfoSecCon-2026: Bangladesh’s Cybersecurity Leaders Unite to Shape a Safer Digital Future”
Microsoft Patches CVSS 10.0 Azure AI Foundry Vulnerability Allowing Privilege Escalation
AWS is unable to restore access to Bahrain, one UAE cloud data zone after war damage
Cisco Warns of Critical ISE 0-Day Flaw and Hackers Allegedly Selling Fortinet FortiGate 1-Day Flaw
Anthropic prepares “Claude Money” to analyze bank account and financial data
Sensitive credentials and configuration in container deployments for graphapi versions 0.2.0 to 0.3.0 were exposed, leading to a security vulnerability with a CVSS score of 10.0.
WebDAV API authentication bypass through the use of pre-signed URLs affects core versions 10.6.0 to 10.13.0. This vulnerability has a CVSS score of 9.8.
Subdomain Validation Bypass impacting oauth2 prior to version 0.6.1 (CVSS score: 9.0)
“The first vulnerability involves the ‘graphapi’ app relying on a third-party library that exposes the PHP environment configuration details (phpinfo).”
“This information includes all the environment variables of the web server. In containerized deployments, these environment variables may include sensitive data such as the ownCloud admin password, mail server credentials, and license key.”
To fix the issue, ownCloud suggests removing the “owncloud/apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php” file and disabling the ‘phpinfo’ function. Additionally, users are advised to update their ownCloud admin password, mail server and database credentials, and Object-Store/S3 access keys.
The second problem allows anyone to access, modify, or delete any file without needing authentication if they know the victim’s username and the victim hasn’t set up a signing-key, which is the default setting.
“Lastly, the third flaw relates to a case of improper access control that enables an attacker to redirect callbacks to a TLD controlled by the attacker without undergoing validation.”
Besides adding hardening measures to the validation code in the oauth2 app, ownCloud has suggested that users disable the “Allow Subdomains” option as a workaround.
