Resource exhaustion in Harbor - #VU153949
Published: October 7, 2026 / Updated: October 8, 2026
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in Harbor jobservice when reading and transparently decompressing webhook error response bodies without a size limit. A remote user can configure a webhook to point to a controlled receiver that repeatedly returns specially crafted gzip-compressed error responses to cause a denial of service.
Exploitation requires the project admin role. With the default Project Creation: Everyone setting, any registered user can create a project and become its admin. Jobservice is shared across all projects and also runs replication, scanning, garbage collection and retention jobs.