CVE-2026-77082
n8n before 1.123.69 ReDoS via Filter and Switch Node
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contains a regular expression denial of service (ReDoS) vulnerability in the Filter and Switch nodes, which compile user-supplied regex patterns with new RegExp() and execute them synchronously on the worker thread without complexity validation or execution timeout. A crafted regex pattern can block the worker for an extended period per data item processed, delaying other workflow executions on the same worker.
| CWE | CWE-1333 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Aug 20, 2026 |
| Last Updated | Aug 20, 2026 |
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Affected Versions
n8n-io / n8n
0 < 1.123.69
n8n-io / n8n
0 < 2.34.1
n8n-io / n8n
0 < 2.33.4