n8n: Log Streaming Event Destinations Decrypt Generic-Auth Credentials Without Ownership Check (CVE-2026-86993) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-86993

n8n: Log Streaming Event Destinations Decrypt Generic-Auth Credentials Without Ownership Check

Answer in brief

CVE-2026-86993 records a Unknown severity vulnerability in n8n: Log Streaming Event Destinations Decrypt Generic-Auth Credentials Without Ownership Check. The current sources do not mark it as known exploited. The current feed maps n8n-io/n8n (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 8, 2026Source checked Sep 8, 2026First seen by HOL Sep 8, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps n8n-io/n8n (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
n8n-io/n8ngeneric	>= 2.38.0, < 2.38.2 \|\| >= 2.0.0, < 2.37.7 \|\| < 1.123.76	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for n8n-io/n8n.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Upstream source description

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, a Log Streaming event destination could reference a generic HTTP credential and decrypt whichever credential ID it named without an ownership check. A user with a custom global role carrying Log Streaming scopes could select a credential belonging to another project and send its decrypted secret to an attacker-controlled endpoint. The affected authorization boundary is packages/cli/src/modules/log-streaming.ee/destinations/destination-credentials-access.ts and the credential:read scope. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

Quoted source text, attributed separately from HOL analysis.