n8n-io n8n up to 1.114.2 Buffer.allocUnsafe/Buffer.allocUnsafeSlow exposure of resource

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in n8n-io n8n up to 1.114.2 and classified as problematic. The affected element is the function Buffer.allocUnsafe/Buffer.allocUnsafeSlow. Performing a manipulation results in exposure of resource. This vulnerability is identified as CVE-2025-61917. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in n8n-io n8n up to 1.114.2. This affects the function Buffer.allocUnsafe/Buffer.allocUnsafeSlow. The manipulation with an unknown input leads to a exposure of resource vulnerability. CWE is classifying the issue as CWE-668. The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource. This is going to have an impact on confidentiality. The summary by CVE is:

n8n is an open source workflow automation platform. From version 1.65.0 to before 1.114.3, the use of Buffer.allocUnsafe() and Buffer.allocUnsafeSlow() in the task runner allowed untrusted code to allocate uninitialized memory. Such uninitialized buffers could contain residual data from within the same Node.js process (for example, data from prior requests, tasks, secrets, or tokens), resulting in potential information disclosure. This issue has been patched in version 1.114.3.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-61917 since 10/04/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 298981 (n8n Node.js Package >= 1.65.0 < 1.114.3 Unsafe Buffer Allocation Memory Disclosure (CVE-2025-61917)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.114.3 eliminates this vulnerability. Applying the patch 2c4c2953199733c791f739a40879ae31ca129aba 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.

The vulnerability is also documented in the databases at Tenable (298981) and CERT Bund (WID-SEC-2026-0318). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • n8n n8n

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.7
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: Exposure of resource
CWE: CWE-668 / CWE-200 / CWE-284
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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Nessus ID: 298981
Nessus Name: n8n Node.js Package >= 1.65.0 < 1.114.3 Unsafe Buffer Allocation Memory Disclosure (CVE-2025-61917)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: n8n 1.114.3
Patch: 2c4c2953199733c791f739a40879ae31ca129aba

Timelineinfo

10/04/2025 CVE reserved
02/04/2026 +123 days Advisory disclosed
02/04/2026 +0 days VulDB entry created
02/18/2026 +14 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-49mx-fj45-q3p6
Status: Confirmed

CVE: CVE-2025-61917 (🔒)
GCVE (CVE): GCVE-0-2025-61917
GCVE (VulDB): GCVE-100-344361
CERT Bund: WID-SEC-2026-0318 - n8n: Mehrere Schwachstellen

Entryinfo

Created: 02/04/2026 18:33
Updated: 02/18/2026 22:56
Changes: 02/04/2026 18:33 (66), 02/05/2026 16:14 (7), 02/14/2026 05:13 (2), 02/18/2026 22:56 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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