CVE-2026-77080

n8n before 1.123.69 Arbitrary File Read and Write via Snowflake

HIGH

8.8

CVSS Score

Published: August 20, 2026 at 11:21 AM UTC

Updated: September 1, 2026 at 08:01 PM UTC

2 products affected across 2 vendorsN8NN8N

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Severity

HIGH8.8

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contain an arbitrary file read and write vulnerability in the Snowflake node, which passes free-form Execute Query input, including client-side commands, directly to the Snowflake SDK without applying n8n's file-access restrictions. An authenticated user with usable Snowflake credentials can upload a local file from the n8n host or overwrite an existing file with a staged one.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

N8N · N8Nnpm

95%

v < 1.123.69v < 2.33.4v < 2.34.12.0.0 ≤ v < 2.33.42.34.0

Affected range stops below 1.123.69, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.33.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.34.1, so it looks safe — our inference, not a vendor statement

N8N · N8N Io

60%

v < 1.123.692.0.0 ≤ v < 2.33.42.34.0 ≤ v < 2.34.12.0.0 2.34.0

Vendor states this is fixed in 1.123.69 (unaffected)

Vendor states this is fixed in 2.33.4 (unaffected)

Vendor states this is fixed in 2.34.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/n8n-io/n8n/security/advisories/GHSA-r4j2-j3wm-q689

References (2)

Vendor AdvisoryMitigation

Source: cverecord

https://github.com/n8n-io/n8n/security/advisories/GHSA-r4j2-j3wm-q689

Third Party Advisory

Source: cverecord

https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-and-write-via-snowflake

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-78

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