FOG: Privilege escalation to root via Storage Node API edit
Summary
FOG, an open-source imaging and inventory suite, lets an authenticated API user with uType=1 modify Storage Node user, password and ftppath fields through the API because no administrator role is enforced. When storage replication is enabled, these values are passed to an lftp command run as root, so the low-privileged user can execute commands as root on the FOG server. The attacker needs valid credentials, the user's API token and the global FOG API token.
Affected
- FOG before 1.5.10.2253
- FOG before 1.6.0-RC-1
Fixed in
- 1.5.10.2253
- 1.6.0-RC-1
Workaround
- No vendor workaround known; upgrading is the fix.
- Disable storage replication until the patch is applied, if it is not needed.
- Restrict access to the FOG web GUI and API to the management network.
Exploitation
- Not known to be exploited in the wild.
- No public exploit code confirmed at the time of research.
- Not listed in CISA KEV according to a secondary aggregator.
- CISA SSVC: exploitation none, automatable no, technical impact total.
Our recommendation
- Upgrade FOG to 1.5.10.2253, 1.6.0-RC-1 or later.
- Review which accounts have API access and which non-administrator accounts can reach the API; rotate the global and user API tokens if misuse is suspected.
- Check Storage Node records for unexpected changes to user, password or ftppath fields.
- Confirm that the FOG GUI and API are not exposed to the internet.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- GitHub Security Advisory GHSA-2hqx-5ffg-w4c3 github.com
- Fix commit 3098e44 (API gate on uType) github.com
- Fix commit aeda5bc (lftp command without shell) github.com
- FOG release 1.5.10.2253 github.com
- FOG release 1.6.0-RC-1 github.com
- FOG pull request 1001 github.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 31 Oct 2026, 09:33.
Original description (NVD)
FOG is a free open-source cloning/imaging/rescue suite/inventory management system. Prior to 1.5.10.2253 and 1.6.0-RC-1, an authenticated API-enabled user with uType=1 who possesses both the user's API token and the global FOG API token can use PUT /fog/storagenode/{id}/edit to modify Storage Node user, pass, and ftppath fields because the API validates the credentials but does not enforce an administrator-only role. With storage replication enabled and a usable Storage Node, FOGImageReplicator interpolates those fields into an lftp command executed through proc_open() by the root-running service, allowing the low-privileged user to execute commands as root. This issue is fixed in versions 1.5.10.2253 and 1.6.0-RC-1.
NVD references (6)
- https://github.com/FOGProject/fogproject/commit/3098e4423588951d8f0cedac79b9b102f036761e
- https://github.com/FOGProject/fogproject/commit/aeda5bc536e3eec0200366d6b109a66798abc438
- https://github.com/FOGProject/fogproject/pull/1001
- https://github.com/FOGProject/fogproject/releases/tag/1.5.10.2253
- https://github.com/FOGProject/fogproject/releases/tag/1.6.0-RC-1
- https://github.com/FOGProject/fogproject/security/advisories/GHSA-2hqx-5ffg-w4c3
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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