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CVE-2026-27493

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, a second-order expression injection vulnerability existed in n8n's Form nodes that could allow an unauthenticated attacker to inject and evaluate arbitrary n8n expressions by submitting crafted form data. When chained with an expression sandbox escape, this could escalate to remote code execution on the n8n host. The vulnerability requires a specific workflow configuration to be exploitable. First,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f634e6cd89c2da498f2506743614571802d9eb4c7b8bc1c0498cb3e6834f9c0e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-95","description":"CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"n8n","vendor":"n8n-io","versions":[{"status":"affected","version":"< 1.123.22"},{"status":"affected","version":">= 2.0.0, < 2.9.3"},{"status":"affected","version":">= 2.10.0, < 2.10.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.5,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-95","description":"CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/n8n-io/n8n/commit/562d867483e871b0f1e31776252e23bd721df75b","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/commit/562d867483e871b0f1e31776252e23bd721df75b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/references/2
{"name":"https://github.com/n8n-io/n8n/issues/19","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/issues/19"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/references/1
{"name":"https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.22","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.22"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/references/3
{"name":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.10.1","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.10.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/references/4
{"name":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.9.3","tags":["x_refsource_MISC"],"url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.9.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /containers/cna/references/5
{"name":"https://github.com/n8n-io/n8n/security/advisories/GHSA-75g8-rv7v-32f7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-75g8-rv7v-32f7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3187dbdb530693e8f5dff346b620bf8782e27f948610f2690c8fae87217b7aa · sha256:1921394bb17e7cbd… · /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.

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