n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP transport mode, the MCP endpoint accepts session initialization and tool invocation requests without any authentication. An…
Exact source revision recorded 28 Oct 2026 08:08:06 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-38468
Publishedn8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP transport mode, the MCP endpoint accepts session initialization and tool invocation requests without any authentication. Any network-reachable client, or any website visited by the user, can establish an MCP session and invoke browser-control tools. Where the n8n AI Browser Bridge extension is installed and a browser connection is active, an unauthenticated caller can access browser-control capabilities including navigation, JavaScript evaluation, and cookie and storage access against the user's real browser profile. This issue only affects instances where @n8n/mcp-browser is run with the HTTP transport (--transport http). This vulnerability is fixed in 2.25.7 and 2.26.2.
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Jun 23, 2026, 3:36:13 PM
dateUpdated: Jun 23, 2026, 3:45:15 PM
1 related source bulletins · separate from aliases
NCSC-2026-0212: Kwetsbaarheden verholpen in n8n workflow automation platform
CVE-2026-54301 · CVE-2026-54302 · CVE-2026-54304 · CVE-2026-54305 · CVE-2026-54306 · CVE-2026-54307 · CVE-2026-54308 · CVE-2026-54309 · CVE-2026-54310 · CVE-2026-54311 · CVE-2026-54312 · CVE-2026-54313 · CVE-2026-54314 · CVE-2026-54303
- Source published
- Jun 23, 2026, 3:36:13 PM (timezone not stated)
- Source modified
- Jun 23, 2026, 3:45:15 PM (timezone not stated)
- Observed here
- 28 Oct 2026 08:08:06 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 4.0 · 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N