cve-2026-21877-rce

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n8n Warns of CVSS 10.0 RCE Vulnerability Affecting Self-Hosted and Cloud Versions

Open-source workflow automation platform n8n has warned of a maximum-severity security flaw that, if successfully exploited, could result in authenticated remote code execution RCE. The vulnerability, which has been assigned the CVE identifier CVE-2026-21877 , is rated 10.0 on the CVSS scoring...

@ai-growth/n8n-nodes-wordpress (>=0.2.0, <=0.6.12), @antonytm/n8n-nodes-test (>=0.1.5, <=0.2.1) +77 more potentially affected by CVE-2026-21877 via n8n-workflow (>=1.0.0, <=1.118.1)

n8n-workflow NPM version =1.0.0, =0.2.0, =0.1.5, =0.0.17, =1.0.2, =1.0.1, =0.2.0, =0.19.0, =0.4.0, =0.11.0, =1.1.0, =1.1.0, =1.1.0, =1.0.1, =1.57.1 and more Source cves: CVE-2026-21877 Source advisory: SNYK:JS-N8NWORKFLOW-14894273...

@n8n/task-runner (1.58.0), n8n-node-dev (1.120.0) potentially affected by CVE-2026-21877 via n8n-core (1.121.0)

n8n-core NPM version 1.121.0 is affected by a known vulnerability. The following packages have a transitive dependency on n8n-core and may be impacted: - @n8n/task-runner 1.58.0 - n8n-node-dev 1.120.0 Source cves: CVE-2026-21877 Source advisory: SNYK:JS-N8NCORE-14894271...

@regis-samurai/n8n (>=0.216.1, <=0.219.1), n8n-nodes-accelo (>=0.1.0, <=0.1.9) +8 more potentially affected by CVE-2026-21877 via n8n (>=0.138.0, <=0.219.1)

n8n NPM version =0.138.0, =0.216.1, =0.1.0, =0.18.0, =0.1.0, =0.1.0, =0.2.14, =0.1.0, =0.1.0, =0.1.7 Source cves: CVE-2026-21877 Source advisory: OSV:GHSA-V364-RW7M-3263...

@imagina/n8n-nodes-iwhatsapp (>=0.1.0, <=0.2.7), @regis-samurai/n8n (>=0.216.1, <=0.219.1) +15 more potentially affected by CVE-2026-21877 via n8n-nodes-base (>=0.123.1, <=0.225.0)

n8n-nodes-base NPM version =0.123.1, =0.1.0, =0.216.1, =0.126.0, =0.1.0, =0.18.0, =0.1.0, =1.0.0, =0.1.0, =0.2.14, =0.1.0, =1.0.0, =1.0.1 and more Source cves: CVE-2026-21877 Source advisory: SNYK:JS-N8NNODESBASE-14894272...

@ai-growth/n8n-nodes-wordpress (>=0.2.0, <=0.6.12), @henry2323/n8n-nodes-calendar-tool-wrapper (0.1.4) +36 more potentially affected by CVE-2026-21877 via n8n-core (>=1.0.0, <=1.120.1)

n8n-core NPM version =1.0.0, =0.2.0, =1.0.1, =1.0.1, =0.21.8, =1.0.0, =1.0.0, =0.1.0, =1.0.1, =0.3.3, =0.1.3, =0.1.1, =1.2.0, =0.1.1, =0.4.1, =1.1.1 and more Source cves: CVE-2026-21877 Source advisory: SNYK:JS-N8NCORE-14894271...