Dockhand < 1.0.40 Unauthenticated Webhook Trigger via Git Webhook Endpoints (CVE-2026-53988) | HOL Guard CVE

Critical · CVSS 9.2CVE-2026-53988

Dockhand < 1.0.40 Unauthenticated Webhook Trigger via Git Webhook Endpoints

Answer in brief

CVE-2026-53988 records a Critical severity (CVSS 9.2) vulnerability in Dockhand < 1.0.40 Unauthenticated Webhook Trigger via Git Webhook Endpoints. The current sources do not mark it as known exploited. The current feed maps Finsys/dockhand (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 29, 2026Updated Sep 29, 2026Source checked Sep 29, 2026First seen by HOL Sep 29, 2026Material review Sep 29, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.2
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Finsys/dockhand (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Finsys/dockhandgeneric	>=0 <1.0.40	1.0.40

Recommended response

Check inventory. Check lockfiles and deployed manifests for Finsys/dockhand.
Review the reported fix. Update Finsys/dockhand to 1.0.40 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 29, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.