Detections
Analytics
SCA: security update for signalk-server (GHSA-vfrf-vcj7-wvr8)
high Tenable Self-Hosted Container Security Plugin ID 436541
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.19.0 of
the access request system have two related features that when combined by themselves and with an
information disclosure vulnerability enable convincing social engineering attacks against administrators.
When a device creates an access request, it specifies three fields: `clientId`, `description`, and
`permissions`. The SignalK admin UI displays the `description` field prominently to the administrator when
showing pending requests, but the actual `permissions` field (which determines the access level granted)
is less visible or displayed separately. This allows an attacker to request `admin` permissions while
providing a description that suggests readonly access. The access request handler trusts the `X-Forwarded-
For` HTTP header without validation to determine the client's IP address. This header is intended to
preserve the original client IP when requests pass through reverse proxies, but when trusted
unconditionally, it allows attackers to spoof their IP address. The spoofed IP is displayed to
administrators in the access request approval interface, potentially making malicious requests appear to
originate from trusted internal network addresses. Since device/source names can be enumerated via the
information disclosure vulnerability, an attacker can impersonate a legitimate device or source, craft a
convincing description, spoof a trusted internal IP address, and request elevated permissions, creating a
highly convincing social engineering scenario that increases the likelihood of administrator approval.
Users should upgrade to version 2.19.0 to fix this issue. (CVE-2025-69203)
See Also
Plugin Details
Severity: High
ID: 436541
Version: Revision 1.5
Type: Local
Family: SCA Checks
Published: 1/2/2026
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 57.88
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2025-69203
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 1/2/2026
Vulnerability Publication Date: 1/1/2026
Reference Information
CVE: CVE-2025-69203
cwe: CWE-290