CVE-2026-44789Network attack vector

Authenticated code execution via pagination prototype pollution

Published Jun 23, 2026 · Updated Jun 23, 2026

Prototype pollution in the n8n HTTP Request node before 1.123.43, 2.20.7, and 2.22.1 allows remote authenticated users to enable code execution. The HTTP Request node fails to validate a pagination parameter, allowing attacker-controlled input to modify global object-prototype attributes. Workflow creation or modification permission is required, and code execution depends on chaining the pollution with other techniques.

CVSS severity9.4
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prototype pollution in the n8n HTTP Request node before 1.123.43, 2.20.7, and 2.22.1 allows remote authenticated users to enable code execution. The HTTP Request node fails to validate a pagination parameter, allowing attacker-controlled input to modify global object-prototype attributes. Workflow creation or modification permission is required, and code execution depends on chaining the pollution with other techniques.

The record

CVE
CVE-2026-44789
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-1321, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.123.43
  2. Affected versionversion=>= 2.0.0-rc.0, < 2.20.7
  3. Affected versionversion=>= 2.21.0, < 2.21.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=< 1.123.43; version=>= 2.0.0-rc.0, < 2.20.7; version=>= 2.21.0, < 2.21.1

Published CVSS scores

9.4GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
9.9GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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