High severity · published Feb 4, 2026
CVE-2025-61917
n8n Unsafe Buffer Allocation Allows In-Process Memory Disclosure in Task Runner
7.7
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
>= 1.65.0, < 1.114.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61917
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-61917
Patch
https://github.com/n8n-io/n8n/commit/2c4c2953199733c791f739a40879ae31ca129aba
Mitigation
https://github.com/n8n-io/n8n/security/advisories/GHSA-49mx-fj45-q3p6
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