SignalK signalk-server up to 1.4.x Delta Message navigation.datetime os command injection

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in SignalK signalk-server up to 1.4.x. This impacts an unknown function of the component Delta Message Handler. Such manipulation of the argument navigation.datetime leads to os command injection. This vulnerability is referenced as CVE-2026-23515. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in SignalK signalk-server up to 1.4.x. It has been rated as critical. Affected by this issue is an unknown code block of the component Delta Message Handler. The manipulation of the argument navigation.datetime with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Signal K Server is a server application that runs on a central hub in a boat. Prior to 1.5.0, a command injection vulnerability allows authenticated users with write permissions to execute arbitrary shell commands on the Signal K server when the set-system-time plugin is enabled. Unauthenticated users can also exploit this vulnerability if security is disabled on the Signal K server. This occurs due to unsafe construction of shell commands when processing navigation.datetime values received via WebSocket delta messages. This vulnerability is fixed in 1.5.0.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-23515 since 01/13/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 1.5.0 eliminates this vulnerability. Applying the patch 75b11eae2de528bf89ede3fb1f7ed057ddbb4d24 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 9.9
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: signalk-server 1.5.0
Patch: 75b11eae2de528bf89ede3fb1f7ed057ddbb4d24

Timelineinfo

01/13/2026 CVE reserved
02/03/2026 +21 days Advisory disclosed
02/03/2026 +0 days VulDB entry created
02/27/2026 +24 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-p8gp-2w28-mhwg
Status: Confirmed

CVE: CVE-2026-23515 (🔒)
GCVE (CVE): GCVE-0-2026-23515
GCVE (VulDB): GCVE-100-343880

Entryinfo

Created: 02/03/2026 08:04
Updated: 02/27/2026 15:42
Changes: 02/03/2026 08:04 (68), 02/27/2026 15:42 (12)
Complete: 🔍
Cache ID: 216::103

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