Finsys Dockhand: Response-disclosing SSRF in compose template endpoint
Summary
Finsys Dockhand before 1.0.43 contains a server-side request forgery vulnerability in the /api/templates/compose endpoint. An authenticated user with access to the template deployment feature can make the Dockhand server fetch arbitrary URLs and read the response body. This can expose internal services, cloud metadata endpoints, credentials and tokens.
Affected
- Finsys Dockhand 0 to before 1.0.43 (GHSA lists v1.0.42 as affected)
Fixed in
- Finsys Dockhand 1.0.43 (per CNA record; verify in vendor release notes)
- Running the latest release is recommended
Workaround
Unknown.
Exploitation
- No public proof of concept found at the time of research.
- One aggregator reports exploitation attempts, not confirmed by CISA KEV, the vendor or VulnCheck.
- EPSS 0.26%.
- CISA SSVC: exploitation poc, not automatable.
Our recommendation
- Upgrade Dockhand to the latest release, at least 1.0.43.
- Limit Dockhand accounts to required users and review accounts with template or deploy permissions.
- Do not expose the Dockhand UI to the internet; use a VPN or authenticating reverse proxy.
- Restrict outbound traffic from the Dockhand host, especially to metadata endpoints (169.254.169.254) and internal management ports.
- Check whether the separate Critical Dockhand advisory (unauthenticated container exec via WebSocket upgrade) is fixed in the same version.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- GitHub Security Advisory GHSA-f2mx-74xq-g4p9 github.com
- VulnCheck advisory www.vulncheck.com
- OSV record CVE-2026-110255 osv.dev
- DevGuard vulnerability database entry docs.devguard.org
- Strix CVE entry www.strix.ai
- Vulners NVD record vulners.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 12:32.
Original description (NVD)
Finsys Dockhand before 1.0.43 contains a response-disclosing server-side request forgery vulnerability that allows authenticated users to make the server fetch arbitrary URLs by supplying repository URL and stackfile values. Attackers can send stack templates pointing to internal services or cloud metadata endpoints and read the fetched content from the compose response field, exposing credentials and tokens.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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