CVE Explorer
CVE-2026-59206
n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing unauthenticated requests to be treated as a privileged user and exposing user and project listing endpoints. This issue is fixed in versions 1.123.61, 2.27.4, and 2.28.1.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"n8n","vendor":"n8n-io","versions":[{"status":"affected","version":">= 2.28.0, < 2.28.1"},{"status":"affected","version":">= 2.0.0-rc.0, < 2.27.4"},{"status":"affected","version":"< 1.123.61"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a0e0093e5d8021bdf91400b744c1e51bb5ee8dbac980f8d5f809ace0cc2216c9 · sha256:2b48e0ea347e2c41… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a0e0093e5d8021bdf91400b744c1e51bb5ee8dbac980f8d5f809ace0cc2216c9 · sha256:2b48e0ea347e2c41… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-1321","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a0e0093e5d8021bdf91400b744c1e51bb5ee8dbac980f8d5f809ace0cc2216c9 · sha256:2b48e0ea347e2c41… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a0e0093e5d8021bdf91400b744c1e51bb5ee8dbac980f8d5f809ace0cc2216c9 · sha256:2b48e0ea347e2c41… · /containers/cna/references/1
{"name":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a0e0093e5d8021bdf91400b744c1e51bb5ee8dbac980f8d5f809ace0cc2216c9 · sha256:2b48e0ea347e2c41… · /containers/cna/references/2
{"name":"https://github.com/n8n-io/n8n/security/advisories/GHSA-75qm-gp28-rcq9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-75qm-gp28-rcq9"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a0e0093e5d8021bdf91400b744c1e51bb5ee8dbac980f8d5f809ace0cc2216c9 · sha256:2b48e0ea347e2c41… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.