Logo
-

Byte Open Security

(ByteOS Network)

Log In

Sign Up

ByteOS

Security
Vulnerability Details
Registries
Custom Views
Weaknesses
Attack Patterns
Filters & Tools
Vulnerability Details :

CVE-2026-45582

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-29 May, 2026 | 13:37
Updated At-29 May, 2026 | 13:37
Rejected At-
Credits

n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.3, the workflow telemetry sanitizer could retain partial fragments of URL-shaped node parameters before sending workflow data to the project's anonymous telemetry backend. Values placed in HTTP-Request-style node parameters — such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters — could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:29 May, 2026 | 13:37
Updated At:29 May, 2026 | 13:37
Rejected At:
▼CVE Numbering Authority (CNA)
n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.3, the workflow telemetry sanitizer could retain partial fragments of URL-shaped node parameters before sending workflow data to the project's anonymous telemetry backend. Values placed in HTTP-Request-style node parameters — such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters — could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3.

Affected Products
Vendor
czlonkowski
Product
n8n-mcp
Versions
Affected
  • < 2.51.3
Problem Types
TypeCWE IDDescription
CWECWE-201CWE-201: Insertion of Sensitive Information Into Sent Data
Type: CWE
CWE ID: CWE-201
Description: CWE-201: Insertion of Sensitive Information Into Sent Data
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w
x_refsource_CONFIRM
https://github.com/czlonkowski/n8n-mcp/pull/782
x_refsource_MISC
https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f
x_refsource_MISC
https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3
x_refsource_MISC
Hyperlink: https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/czlonkowski/n8n-mcp/pull/782
Resource:
x_refsource_MISC
Hyperlink: https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f
Resource:
x_refsource_MISC
Hyperlink: https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3
Resource:
x_refsource_MISC
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:29 May, 2026 | 14:16
Updated At:29 May, 2026 | 15:06

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.3, the workflow telemetry sanitizer could retain partial fragments of URL-shaped node parameters before sending workflow data to the project's anonymous telemetry backend. Values placed in HTTP-Request-style node parameters — such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters — could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-201Primarysecurity-advisories@github.com
CWE ID: CWE-201
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329fsecurity-advisories@github.com
N/A
https://github.com/czlonkowski/n8n-mcp/pull/782security-advisories@github.com
N/A
https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3security-advisories@github.com
N/A
https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9wsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/czlonkowski/n8n-mcp/pull/782
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

52Records found
CVE-2025-41415
Matching Score-4
Assigner-Cybersecurity and Infrastructure Security Agency (CISA) Industrial Control Systems (ICS)
ShareView Details
Matching Score-4
Assigner-Cybersecurity and Infrastructure Security Agency (CISA) Industrial Control Systems (ICS)
CVSS Score-7.1||HIGH
EPSS-0.07% / 22.26%
||
7 Day CHG~0.00%
Published-21 Aug, 2025 | 19:57
Updated-22 Aug, 2025 | 18:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
AVEVA PI Integrator Insertion of Sensitive Information into Sent Data

The vulnerability, if exploited, could allow an authenticated miscreant (with privileges to access publication targets) to retrieve sensitive information that could then be used to gain additional access to downstream resources.

Action-Not Available
Vendor-AVEVA
Product-PI Integrator
CWE ID-CWE-201
Insertion of Sensitive Information Into Sent Data
CVE-2023-3413
Matching Score-4
Assigner-GitLab Inc.
ShareView Details
Matching Score-4
Assigner-GitLab Inc.
CVSS Score-6.5||MEDIUM
EPSS-0.22% / 44.71%
||
7 Day CHG~0.00%
Published-29 Sep, 2023 | 08:30
Updated-20 Nov, 2025 | 04:07
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Insertion of Sensitive Information Into Sent Data in GitLab

An issue has been discovered in GitLab affecting all versions starting from 16.2 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible to read the source code of a project through a fork created before changing visibility to only project members.

Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-201
Insertion of Sensitive Information Into Sent Data
  • Previous
  • 1
  • 2
  • Next
Details not found