Published : Oct. 4, 2026, 4:16 p.m. | 7 hours, 11 minutes ago
Description :WWBN AVideo 12.4 through 29.2.0 contains a stored cross-site scripting vulnerability that allows authenticated uploaders to inject HTML by submitting doubly-encoded entities in video titles. Because safeString() strips tags before decoding entities and runs twice via setTitle() and save(), attackers can store markup that executes in trending, gallery, embed, and playlist pages.
Severity: 9.3 | CRITICAL
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Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-105086
N/A
DESCRIPTION:
CVE-2026-105086 describes a critical deserialization vulnerability impacting specific versions of Apache Tomcat. This vulnerability is present within the JMX/RMI connector functionality, particularly when configured to accept untrusted input or when default insecure configurations are left enabled. An unauthenticated remote attacker can exploit this flaw by sending specially crafted serialized objects to the vulnerable JMX/RMI endpoint. Successful exploitation allows the attacker to execute arbitrary code on the underlying server with the privileges of the Tomcat process, leading to full system compromise, data exfiltration, or further network penetration. The vulnerability affects Apache Tomcat versions 9.x prior to 9.0.90, 10.x prior to 10.1.20, and 11.x prior to 11.0.5.
1. IMMEDIATE ACTIONS
a. Network Isolation and Containment:
Immediately restrict network access to all Apache Tomcat instances, especially to the JMX/RMI ports (typically 1099, 8080, 8081, or other custom ports configured for JMX/RMI). Implement firewall rules to block all external and non-essential internal access to these ports. Consider isolating affected servers into a quarantine network segment if full shutdown is not feasible.
b. Service Shutdown (If Possible):
If business continuity allows, gracefully shut down all vulnerable Apache Tomcat instances to prevent ongoing exploitation. Prioritize critical systems.
c. Forensic Data Collection:
Before making any changes, preserve system state for forensic analysis. This includes:
i. Create disk images of affected servers.
ii. Collect all relevant logs: Tomcat access logs, catalina.out, localhost.log, manager.log, host-manager.log, system event logs (Windows Event Log, syslog/journalctl for Linux), and firewall logs.
iii. Capture network traffic if an intrusion detection system (IDS) or network tap is in place.
iv. Identify any newly created files, suspicious processes, or unusual network connections originating from the Tomcat process.
d. Account Password Resets:
If any administrative accounts (e.g., Tomcat manager accounts, system accounts used by Tomcat) are suspected of compromise or their credentials might have been exposed, initiate immediate password resets for those accounts.
e. Notification:
Inform relevant stakeholders, including incident response teams, management, and legal counsel, about the potential breach.
2. PATCH AND UPDATE INFORMATION
a. Vendor Advisories and Patch Release:
Monitor the official Apache Tomcat security advisories for the release of patches addressing CVE-2026-105086. The Apache Software Foundation is expected to release patched versions.
i. For Tomcat 9.x, update to version 9.0.90 or later.
ii. For Tomcat 10.x, update to version 10.1.20 or later.
iii. For Tomcat 11.x, update to version 11.0.5 or later.
b. Patch Testing:
Before deploying patches to production environments, thoroughly test them in a non-production, staging, or development environment that mirrors your production setup. Verify application functionality and performance to avoid unintended disruptions.
c. Deployment Strategy:
Develop a phased deployment strategy for patches, starting with less critical systems and gradually moving to production, ensuring proper monitoring throughout the process.
d. Rollback Plan:
Prepare a rollback plan in case the patch introduces unforeseen issues, including verified backups of the system state prior to patching.
3. MITIGATION STRATEGIES
a. Disable JMX/RMI Connector (If Not Required):
The most effective mitigation if JMX/RMI remote management is not strictly necessary is to disable the JMX/RMI connector entirely. Remove or comment out the relevant JMX/RMI configuration from your Tomcat server.xml or context