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CVE-2026-65591

n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4cc76a461cf2b1ba87b874bb7c92ff1b26db99fc374db1377e3bc5ba2afafed7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"2.30.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.30.1","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/affected/1

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"2.29.8","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.29.8","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/affected/2

{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"1.123.64","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"1.123.64","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/affected/0

Affected products and versions

3 source assertions
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"2.30.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.30.1","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/affected/1
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"2.29.8","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.29.8","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/affected/2
{"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","product":"n8n","vendor":"n8n-io","versions":[{"lessThan":"1.123.64","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"1.123.64","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.9,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"LOW","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-917","description":"Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"GitHub Security Advisory (GHSA-pm35-fqvh-cq5g)","tags":["vendor-advisory"],"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/references/0
{"name":"VulnCheck Advisory: n8n before 1.123.64 Sanitizer Bypass Remote Code Execution","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:22c1ad277db905019bfa545ae625016f6908beec1a1570070aaffbf3178ddb7b · sha256:363d1feadad69981… · /containers/cna/references/1

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.

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