Cloud Commander: Path traversal via GET /api/v1/pack
Summary
Cloud Commander (cloudcmd) versions 19.20.2 through 19.21.1 contain a path traversal vulnerability in the GET /api/v1/pack endpoint. An attacker can use percent-encoded traversal sequences to read arbitrary files outside the configured --root directory, such as /etc/passwd or SSH private keys, which are returned as a downloadable tar.gz archive. The flaw only applies when --root is set to a value other than /, because with the default root / full filesystem access is by design. With the shipped default configuration (auth disabled), no credentials are required.
Affected
- Cloud Commander (cloudcmd) 19.20.2 through 19.21.1
- Only when the --root option is set to a value other than /
Fixed in
- Fixed in cloudcmd 19.21.2
Workaround
- No vendor workaround known.
- Until the update is applied, restrict network access to the instance (VPN, IP allow-list, or no public exposure).
- Enable authentication if it is disabled.
Exploitation
- No known exploitation in the wild. CISA SSVC lists exploitation as none.
- A public write-up exists; its contents were not verified.
- The attack is network-reachable and needs no user interaction.
Our recommendation
- Inventory all Cloud Commander instances, including containers and test servers.
- Upgrade to version 19.21.2 or later.
- Remove direct internet exposure and enable authentication.
- Review logs for requests to /api/v1/pack with unusual paths and check for unexpected downloads.
- If an exposed instance had access to sensitive files, rotate SSH keys and credentials.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Cloud Commander: path traversal past --root in GET /api/v1/pack (gist) gist.github.com
- Fix commit 91c0245: server: pack: path traverse github.com
- Cloud Commander release v19.21.2 github.com
- VulnCheck advisory: Cloud Commander path traversal via GET /api/v1/pack www.vulncheck.com
- OSV: CVE-2026-110690 osv.dev
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, 04:05.
Original description (NVD)
Cloud Commander (cloudcmd) versions 19.20.2 through 19.21.1 contains a path traversal vulnerability in the GET /api/v1/pack endpoint where the onGET handler at server/rest/index.js:130 calls the unguarded root() function instead of the root.resolve() validation wrapper used elsewhere. Attackers can send percent-encoded directory traversal sequences in the pack request path to read arbitrary files outside the configured --root directory, such as /etc/passwd or SSH private keys, which are archived and streamed back as a downloadable tar.gz file.
NVD references (4)
- https://gist.github.com/mansurmavlankulov/5a0c4cbab8e49ac0669d126c854da95e
- https://github.com/coderaiser/cloudcmd/commit/91c024591f425e26200884d5e1d5ba972377968b
- https://github.com/coderaiser/cloudcmd/releases/tag/v19.21.2
- https://www.vulncheck.com/advisories/cloud-commander-through-path-traversal-via-get-api-v1-pack
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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