CVE-2026-77075Network attack vectorHinoki check available

Cross-user script execution via resource-locator expression injection

Published Aug 20, 2026 · Updated Aug 20, 2026

Expression injection in n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 allows remote authenticated users to execute JavaScript. During link-preview rendering, the editor inserts the stored resource-locator value into the node type's URL template without rejecting expression syntax. A member must save the payload and a different authenticated user must open the affected node; the script then runs with the victim's session access.

CVSS severity8.4
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Expression injection in n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 allows remote authenticated users to execute JavaScript. During link-preview rendering, the editor inserts the stored resource-locator value into the node type's URL template without rejecting expression syntax. A member must save the payload and a different authenticated user must open the affected node; the script then runs with the victim's session access.

The record

CVE
CVE-2026-77075
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-94, CAPEC-77, CAPEC-242, CAPEC-35, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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=0 <1.123.69
  2. Affected versionversion=0 <2.33.4
  3. Affected versionversion=0 <2.34.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=0 <1.123.69; version=0 <2.33.4; version=0 <2.34.1

Published CVSS scores

8.4n8nCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

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-94Improper Control of Generation of Code ('Code Injection')
CAPEC-77Manipulating User-Controlled Variables
CAPEC-242Code Injection
CAPEC-35Leverage Executable Code in Non-Executable Files
T1059.007JavaScript/JScript

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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