Executive brief
AutoGPT is an automation platform used to create and manage autonomous AI agents. A vulnerability in how the system handles media files allows a user to repeatedly download large files without them being deleted, eventually filling up the server's disk space. This can lead to a complete service outage (Denial of Service), preventing the platform from functioning for all users.
Technical details
A Denial of Service (DoS) vulnerability exists in AutoGPT due to uncontrolled resource consumption (CWE-400) within the MediaDurationBlock and StepThroughItemsBlock components. The MediaDurationBlock downloads remote media files to a local temporary directory but fails to delete them immediately after processing or enforce disk space quotas. Because the StepThroughItemsBlock does not limit the number of iterations, an attacker can trigger repeated downloads of large files or numerous screenshots. This leads to disk space exhaustion on the host system. Furthermore, the use of long-running timers can delay the final cleanup of these temporary directories indefinitely. The issue is resolved in version 0.6.63.
Affected products
- Significant-Gravitas AutoGPT < 0.6.63
Timeline
- 2026-06-11: advisory: GitHub Security Advisory published
- 2026-06-18: disclosed: NVD publication date