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n8n - Permission Bypass via Expression Parser Mismatch in External Secrets

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

3 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

25 Oct 2026 14:19:22 UTC

n8n before versions 1.123.61, 2.27.4, and 2.28.1 contains a permission bypass vulnerability in external secrets handling caused by a mismatch between the static validation check and the runtime expression engine. An authenticated user with …

nvd · CVE-2026-59259 · Published

24 Oct 2026 13:17:17 UTC

n8n: External Secrets Permission Bypass via Expression Parser Mismatch

osv · GHSA-jp7m-xcgx-57qm · Published

23 Oct 2026 15:48:27 UTC

n8n - Permission Bypass via Expression Parser Mismatch in External Secrets

cve-program · CVE-2026-59259 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 27 Oct 06:40 UTC · 268 of 272 readable · 267 fully read · documentation 469/469 current