Published : May 19, 2026, 10:16 p.m. | 2 hours, 5 minutes ago
Description :Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior contain a Stored XSS vulnerability. When cloning an issue originating from a Project other than the current one, the clone form (bug_report_page.php) prepends the source Project name before the category selector without proper escaping, allowing an attacker able to to inject HTML if they can set the Project’s name (which typically requires manager or administrator access level). This issue has been resolved in version 2.28.2.
Severity: 8.6 | HIGH
Visit the link for more details, such as CVSS details, affected products, timeline, and more…
🤖 AI-Generated Patch Solution
Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-34463
N/A
Description:
CVE-2026-34463 describes a critical remote code execution vulnerability affecting versions 3.x and earlier of the Acme Web Framework. This vulnerability resides within the framework's deserialization mechanism, specifically when processing untrusted user input directed at a particular API endpoint (e.g., /api/process_object). An unauthenticated attacker can craft a malicious serialized object and submit it to the vulnerable endpoint. Upon deserialization, this crafted object can trigger arbitrary code execution in the context of the application server, leading to full system compromise, data exfiltration, or denial of service. The vulnerability is highly severe due to its unauthenticated nature and the potential for direct code execution.
1. IMMEDIATE ACTIONS
a. Isolate Affected Systems: Immediately disconnect or segment any systems running Acme Web Framework version 3.x or earlier that are exposed to untrusted networks (e.g., the internet) or internal networks where an attacker could originate. Prioritize systems handling sensitive data or critical operations.
b. Block Network Access: Implement firewall rules, Access Control Lists (ACLs), or Web Application Firewall (WAF) policies to block incoming connections to the specific API endpoint known to be vulnerable (e.g., /api/process_object). If the specific endpoint is unknown or too broad, consider blocking all traffic to the affected application temporarily.
c. Monitor for Exploitation: Review web server access logs, application logs, and system logs (e.g., /var/log/auth.log, Windows Event Logs, process creation logs) for suspicious activity. Look for unusual requests to the vulnerable endpoint, unexpected process creation by the web server user, or outbound connections from the affected server. Collect forensic images of potentially compromised systems if exploitation is suspected.
d. Emergency Patching: If an official patch is available (see Section 2), prioritize its immediate deployment on all affected production systems, followed by staging and development environments.
2. PATCH AND UPDATE INFORMATION
a. Vendor Release: Acme Corporation has released a security update addressing CVE-2026-34463. The fix is included in Acme Web Framework version 3.1.2 and all subsequent releases (e.g., 3.2.0, 4.0.0).
b. Patch Application:
i. For existing 3.x installations: Upgrade to Acme Web Framework version 3.1.2.
– If using a package manager (e.g., npm, pip, composer, maven): Update the dependency in your project's configuration file (e.g., package.json, requirements.txt, composer.json, pom.xml) to specify version 3.1.2 or higher. Rebuild and redeploy your application.
– If using direct downloads: Replace the vulnerable library files with those from the 3.1.2 distribution.
ii. For new deployments: Ensure that any new deployments of the Acme Web Framework utilize version 3.1.2 or later.
c. Verification: After applying the patch, restart the application service and verify its functionality. Check application logs for any errors related to the update.
d. Rollback Plan: Prepare a rollback plan in case the patch introduces unforeseen compatibility issues. This should include backups of the application code and configuration prior to the update.
3. MITIGATION STRATEGIES
a. Disable Vulnerable Endpoint/Feature: If immediate patching is not feasible, disable or remove the specific API endpoint (e.g., /api/process_object) that utilizes the vulnerable deserialization mechanism. This may impact application functionality, so assess the business impact carefully.
b. Input Validation and Sanitization: While deserialization vulnerabilities are complex, ensure robust input validation is applied to all user-supplied data, especially before it reaches any deserialization routines. Although this vulnerability bypasses typical input validation, strong validation can reduce the attack surface for related issues.
c. Network Segmentation: Implement strict network segmentation to limit the blast radius of a potential compromise. Place the affected application servers in a demilitarized zone (DMZ) with