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9.2
CVE-2026-53988: Dockhand lets unauthenticated users trigger stack redeployments
CVE-2026-53988 · published 19 days ago
Summary
Versions of Dockhand older than 1.0.40 let anyone send specially crafted webhook requests and cause a stack to be redeployed without logging in. This can disrupt services and, if an attacker also controls the linked Git repository, could lead to a full host takeover through a malicious Docker Compose file. Upgrade to Dockhand 1.0.40 or later and configure a strong webhook secret for all webhooks.
Original advisory text
Dockhand < 1.0.40 Unauthenticated Webhook Trigger via Git Webhook Endpoints
Dockhand before 1.0.40 contains an authentication bypass vulnerability in its git webhook endpoints that allows unauthenticated remote attackers to trigger arbitrary stack redeployments by exploiting a null webhook secret guard condition. Attackers can enumerate sequential stack IDs and send unsigned webhook requests to force git clone and docker compose operations, enabling denial of service or, when combined with write access to the tracked git branch, container escape and full host compromise via attacker-controlled docker-compose.yml with privileged bind mounts.
References
- https://github.com/Finsys/dockhand/releases/tag/v1.0.40
- https://www.vulncheck.com/advisories/dockhand-unauthenticated-webhook-trigger-vi...
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53988... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-53988 Vendor Advisory
- https://github.com/Finsys/dockhand Product
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker full control
Type
CWE-306Missing Authentication for Critical Function
Timeline
Published29 Sep 2026
Updated15 Oct 2026
First seen29 Sep 2026
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