High · published January 8, 2026
⚡ An attacker with the right agent ID can upload files where they shouldn’t! This oversight in LibreChat version 0.8.1-rc2 could let them mess with agent behaviors like changing the script at a theater! 🎭 Think of it like a theater production where a backstage pass lets someone change the script before the show, even if they weren't cast in the play. This vulnerability gives an authenticated attacker the power to alter the performance without having the proper role! This could lead to chaos in your chat environment! An attacker could upload malicious scripts or files to modify how agents respond, potentially gathering sensitive information or sabotaging conversations. The risks are significant, especially in environments where chat interactions involve private data.
Think of it like a theater production where a backstage pass lets someone change the script before the show, even if they weren't cast in the play. This vulnerability gives an authenticated attacker the power to alter the performance without having the proper role! LibreChat's lack of proper access control for file uploads allows authenticated attackers to change agent behaviors by uploading files, bypassing necessary permission checks. This issue is particularly concerning for any chat application relying on user trust and data integrity.
This could lead to chaos in your chat environment! An attacker could upload malicious scripts or files to modify how agents respond, potentially gathering sensitive information or sabotaging conversations. The risks are significant, especially in environments where chat interactions involve private data. Upgrade to version 0.8.2-rc2 immediately to close this gap! Additionally, review your file upload permissions and ensure that access controls are properly enforced. Regular audits can help keep your setup secure! This is fixable! Stay vigilant, follow these steps, and you’ll keep your chat environment secure. You've got this! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| librechat/librechat | all versions | — |
| librechat/librechat | all versions | — |