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CVE-2026-118676— n8n before 1.123.85, 2.43.5, and 2.44.1 Credential Permission Check Bypass

Quick assessment

Affected

n8n-io n8n

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

n8n 在 1.123.85、2.43.5 和 2.44.1 之前的版本中存在一个授权绕过漏洞。该漏洞允许普通成员用户通过省略默认节点参数，使用其本无权访问的凭据。攻击者可保存并运行工作流，利用执行前检查跳过凭据槽位的机制，导致已解密的凭据值被发送至攻击者指定的目的地。

CVSS 7.1 · High Updated Oct 29, 2026

Possible ATT&CK Techniques 2 AI

T1021 · Remote Services T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

Vendor	Product	Version Range	Status
n8n-io	n8n	`< 1.123.85`	affected
		`1.123.85`	unaffected
		`2.44.0< 2.44.1`	affected
		`2.44.1`	unaffected
		`2.0.0< 2.43.5`	affected
		`2.43.5`	unaffected

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Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

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Vulnerability Title

n8n before 1.123.85, 2.43.5, and 2.44.1 Credential Permission Check Bypass

Source: CVE Program / CVE List V5

Vulnerability Description

n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability that allows member users to use credentials they cannot access by omitting default node parameters. Attackers can save and run workflows where pre-execution checks skip credential slots, causing decrypted credential values to be sent to attacker-chosen destinations.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制不正确

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE
n8n-io	n8n	0 ~ 1.123.85	-
n8n-io	n8n	2.44.0 ~ 2.44.1	-
n8n-io	n8n	2.0.0 ~ 2.43.5	-

II. Public POCs for CVE-2026-118676

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-118676

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Other References for CVE-2026-118676 (2)

https://github.com/n8n-io/n8n/security/advisories/GHSA-v9cx-v88r-42vw vendor-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-credential-permission-check-bypass third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-118676

Same Patch Batch · n8n-io · 2026-10-28 · 15 CVEs total

CVE-2026-118645	8.7 HIGH	n8n before 1.123.85, 2.43.5, and 2.44.1 Filter Injection via Quick Base Node Where Paramet
CVE-2026-118649	8.3 HIGH	n8n before 2.43.5 and 2.44.1 Authorization Bypass via Crafted Workflow ID in Data Tables
CVE-2026-118647	8.2 HIGH	n8n before 1.123.85, 2.43.5, and 2.44.1 SeaTable Trigger API Token Exposure via Execution
CVE-2026-118643	8.2 HIGH	n8n before 1.123.85, 2.43.5, and 2.44.1 Credential Exposure via Node Execution Error Data
CVE-2026-118644	7.7 HIGH	n8n before 2.41.5 and 2.42.2 Credential Theft via Error-Workflow Context Inheritance
CVE-2026-118679	7.5 HIGH	n8n before 1.123.83, 2.41.4, and 2.42.1 Slack Token Exfiltration via Slack Trigger
CVE-2026-118641	7.5 HIGH	n8n before 1.123.85, 2.43.5, and 2.44.1 OData $filter Injection via Outlook and SharePoint
CVE-2026-118648	7.3 HIGH	n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via Webhook Responses Missing Sandbox P
CVE-2026-118675	7.1 HIGH	n8n before 1.123.85, 2.43.5, and 2.44.1 Credential Guard Bypass via Execute Sub-workflow
CVE-2026-118642	7.1 HIGH	n8n before 1.123.85, 2.43.5, and 2.44.1 Credential Permission Check Bypass via Inline Sub-
CVE-2026-118678	7.1 HIGH	n8n before 2.41.4 and 2.42.1 Prototype Pollution DoS via Workflow History Compaction
CVE-2026-118646	6.5 MEDIUM	n8n before 1.123.85, 2.43.5, and 2.44.1 ReDoS via Read/Write Files Node
CVE-2026-118677	5.9 MEDIUM	n8n before 2.41.4 and 2.42.1 Local Gateway Deep-Link Silent Re-pairing to Attacker Instanc
CVE-2026-118640	5.4 MEDIUM	n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass

IV. Related Vulnerabilities

Same product: n8n

Same vendor: n8n-io

Same weakness: CWE-863