{"apiVersion":"1.0","identifier":"CVE-2026-77082","description":"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.","publishedAt":"2026-08-20T12:16:39","lastModifiedAt":"2026-08-21T17:16:47","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77082","cvssScore":5.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.00287,"riskScore":0.54,"affectedProduct":"n8n","affectedVersions":"<1.123.69,<2.33.4,<2.34.1","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-77082","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-77082","en":"https://www.redsauce.net/en/cves/CVE-2026-77082","fr":"https://www.redsauce.net/fr/cves/CVE-2026-77082","pt":"https://www.redsauce.net/pt/cves/CVE-2026-77082","de":"https://www.redsauce.net/de/cves/CVE-2026-77082","sk":"https://www.redsauce.net/sk/cves/CVE-2026-77082","el":"https://www.redsauce.net/el/cves/CVE-2026-77082"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-77082"}}