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CVE-2026-77075— n8n before 1.123.69 Expression Injection via Resource Locator

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.

在 n8n 1.123.69 之前版本、2.x 系列 2.33.4 之前版本，以及 2.34.x 系列 2.34.1 之前版本中，存在一个表达式注入漏洞，该漏洞出现在“资源定位器”字段链接预览渲染过程中。编辑器未对字段存储值进行表达式语法校验，便将其直接拼接到节点类型的 URL 模板中。经过身份验证的用户可以存储恶意构造的值，当其他用户在编辑器中打开受影响节点时，注入的表达式将在受害用户的已认证会话中被当作 JavaScript 执行，从而导致跨用户脚本执行（Cross-User Script Execution）

CVSS 8.4 · High EPSS 0.30% · P22

Affected Version Matrix 6

VendorProduct Version RangeStatus
n8n-io n8n < 1.123.69 affected
1.123.69 unaffected
2.34.0< 2.34.1 affected
2.34.1 unaffected
2.0.0< 2.33.4 affected
2.33.4 unaffected
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I. Basic Information for CVE-2026-77075

Vulnerability Information
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Vulnerability Title
n8n before 1.123.69 Expression Injection via Resource Locator
Source: CVE Program / CVE List V5
Vulnerability Description
n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contain an expression injection vulnerability in resource-locator field link preview rendering. The editor spliced the field's stored value directly into the node type's URL template without checking for expression syntax. An authenticated member can store a malicious value so that when another user opens the affected node in the editor, the injected expression is evaluated as JavaScript in the victim's authenticated session (cross-user script execution).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n-io n8n 0 ~ 1.123.69 -
n8n-io n8n 2.34.0 ~ 2.34.1 -
n8n-io n8n 2.0.0 ~ 2.33.4 -

II. Public POCs for CVE-2026-77075

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III. Intelligence Information for CVE-2026-77075

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Vendor Advisories for CVE-2026-77075 (2)

Same Patch Batch · n8n-io · 2026-08-20 · 17 CVEs total

CVE-2026-77080 8.7 HIGH n8n before 1.123.69 Arbitrary File Read and Write via Snowflake
CVE-2026-77068 8.7 HIGH n8n before 2.34.1 Remote Code Execution via Path Traversal
CVE-2026-77072 8.4 HIGH n8n before 1.123.69 Stored XSS via Form Completion Page
CVE-2026-77084 7.7 HIGH n8n before 1.123.69 Remote Code Execution via Git Node Configuration Values
CVE-2026-77079 7.4 HIGH n8n before 2.34.1 Authorization Bypass via Custom Role Deletion
CVE-2026-77077 7.2 HIGH n8n before 1.123.69 Remote Code Execution via EventEmitter Prototype Pollution
CVE-2026-77071 7.1 HIGH n8n before 1.123.69 PostgREST Filter Injection via Supabase
CVE-2026-77076 7.1 HIGH n8n before 1.123.69 Credential Leak via GraphQL Node Error
CVE-2026-77070 7.1 HIGH n8n before 1.123.69 NoSQL Injection via MongoDB Node
CVE-2026-77085 6.3 MEDIUM n8n before 2.34.1 SSRF Protection Bypass via SearXNG Tool
CVE-2026-77083 6.0 MEDIUM n8n before 1.123.69 Code Node Sandbox Escape via Function.prototype Pollution
CVE-2026-77074 6.0 MEDIUM n8n before 1.123.69 SSRF via Edit Image Node
CVE-2026-77073 5.3 MEDIUM n8n before 2.34.1 Cross-Project Credential Access via MCP
CVE-2026-77082 5.3 MEDIUM n8n before 1.123.69 ReDoS via Filter and Switch Node
CVE-2026-77081 5.1 MEDIUM n8n before 1.123.69 Allowed-Domains Bypass via GraphQL Node
CVE-2026-77069 2.3 LOW n8n before 1.123.69 SSRF Protection Bypass via OAuth2

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-94

V. Comments for CVE-2026-77075

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