CVE-2026-126387
n8n before 2.46.1 Arbitrary File Read via Browser Use browser_upload Tool
n8n before 2.46.1 contains an arbitrary file read vulnerability that allows authenticated members to read server files by supplying absolute paths to the Browser Use browser_upload tool. Attackers with a connected remote browser session can have Playwright read files such as instance configuration from the n8n server and retrieve their contents from the page.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| n8n n8n-io n8n
npm |
≥ 2.46.0; < 2.46.1 (affected, semver) 2.46.1 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| n8n n8n-io n8n
npm |
≥ 0; < 2.45.5 (affected, semver) 2.45.5 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| n8n n8n-io n8n
npm |
≥ 3.0.0; < 3.0.1 (affected, semver) 3.0.1 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.0 medium |
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N | CNA: VulnCheck |
| 4.0 / 6.0 medium |
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/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 | NVD: [email protected] |
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-9qx8-fhxv-w794CNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/n8n-before-2.46.1-arbitrary-file-read-via-browser-use-browser-upload-toolCNA: VulnCheck · third-party-advisory
- https://github.com/n8n-io/n8n/security/advisories/GHSA-9qx8-fhxv-w794[email protected]
- https://www.vulncheck.com/advisories/n8n-before-2.46.1-arbitrary-file-read-via-browser-use-browser-upload-tool[email protected]
For agents and automation
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