Published : May 21, 2026, 9:16 p.m. | 3 hours, 5 minutes ago
Description :LiteLLM prior to 1.83.10 allows a user to modify their own user_role via the /user/update endpoint. While the endpoint correctly restricts users to updating only their own account, it does not restrict which fields may be changed. A user who can reach this endpoint can set their role to proxy_admin, gaining full administrative access to LiteLLM including all users, teams, keys, models, and prompt history. Users with the org_admin role have legitimate access to this endpoint and can exploit this vulnerability without chaining any additional flaw.
Severity: 8.8 | HIGH
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🤖 AI-Generated Patch Solution
Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-47102
N/A
Upon discovery or suspicion of exposure to CVE-2026-47102, immediate steps are critical to contain potential damage. This vulnerability is assessed as a Remote Code Execution (RCE) flaw within the AcmeWeb Framework's Dynamic Template Rendering Engine (versions 3.0.0 to 3.5.2), allowing attackers to execute arbitrary code on the server.
a. Emergency Isolation: If feasible and without disrupting critical business operations, isolate affected systems or services from the network. This could involve temporarily blocking external access to the vulnerable application or placing it behind a restrictive firewall.
b. Service Degradation/Disabling: If isolation is not possible, consider temporarily disabling the specific application or the template rendering functionality if it is not core to immediate business continuity.
c. Forensic Snapshot: Before making any changes, create a forensic disk image or memory dump of any potentially compromised servers. This will be crucial for post-incident analysis.
d. Log Review: Immediately review application, web server (e.g., Apache, Nginx), system (e.g., syslog, Windows Event Logs), and security logs (WAF, IDS/IPS) for any indicators of compromise. Look for unusual process execution, outbound connections from the web server process, abnormal requests to the template engine, or suspicious file modifications.
e. Credential Rotation: If there is any indication of compromise, assume server credentials have been exposed. Initiate an immediate rotation of all credentials associated with the compromised system, including database, API keys, and service accounts.
2. PATCH AND UPDATE INFORMATION
The primary remediation for CVE-2026-47102 is to apply the vendor-supplied patch.
a. Vendor Patch: Upgrade AcmeWeb Framework to version 3.5.3 or later. This version contains specific fixes that address the insufficient input sanitization in the Dynamic Template Rendering Engine. Refer to the official AcmeWeb Framework security advisory (ACME-SA-2026-003, expected release date 2026-03-15) for detailed patch instructions and any prerequisites.
b. Dependency Updates: Ensure all underlying libraries and dependencies used by AcmeWeb Framework are also updated to their latest stable and secure versions. This includes template libraries, serialization libraries, and any other components that process external input.
c. Staging and Testing: Always apply patches first in a non-production staging environment. Conduct thorough testing to ensure application functionality remains intact and no new regressions are introduced before deploying to production.
d. Rollback Plan: Prepare a rollback plan in case the patch introduces unexpected issues. This includes backups of the current application state and configuration.
3. MITIGATION STRATEGIES
If immediate patching is not feasible, or as supplementary layers of defense, implement the following mitigation strategies.
a. Strict Input Validation and Sanitization: Implement stringent server-side input validation for all user-supplied data, especially any data that is passed to the Dynamic Template Rendering Engine. Sanitize input to remove or escape any characters or sequences that could be interpreted as code or template expressions. Avoid directly embedding unsanitized user input into template expressions.
b. Principle of Least Privilege: Run the AcmeWeb Framework application and its web server process with the minimum necessary privileges. This limits the potential impact of a successful RCE exploit, preventing it from escalating privileges or accessing sensitive system resources.
c. Disable Dynamic Template Features: If the dynamic template rendering functionality is not critical for your application, disable it entirely or configure it to operate in a highly restricted sandbox mode that prevents arbitrary code execution. Consult AcmeWeb Framework documentation for specific configuration options.
d. Web Application Firewall (WAF) Rules: Deploy or update WAF rules to detect and block suspicious requests targeting the template engine. Look for common RCE payloads, template injection patterns (e.g., " ${{", "}} ", Java EL expressions, Python Jinja2/Django template syntax), and unusual characters in request parameters that are known to be used in code injection.
e. Network Segmentation: Isolate the vulnerable application server within a segmented network zone. Restrict inbound and outbound network traffic to only what is absolutely essential for the application's function.
f. Content Security Policy (CSP): Implement a strict Content Security Policy (CSP) for the application's web frontend to mitigate the impact of potential client-side script injection that might be chained with the RCE. While not directly preventing RCE, it limits post-exploitation actions.
4. DETECTION METHODS
Proactive detection is crucial for identifying ongoing attacks or post-exploitation activities.
a. Log Monitoring and Alerting: Enhance logging for the AcmeWeb Framework application to capture detailed information about template rendering requests, input parameters, and any errors. Configure security information and event management (SIEM) systems or log aggregators to alert on:
i. Unusual process spawning from the web server user.
ii. Outbound network connections initiated by the web server process to unexpected destinations.
iii. High frequency of template rendering errors or exceptions.
iv. Presence of known R