Quick answers
- Is CVE-2026-118641 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-118641 being exploited in the wild.
- How severe is CVE-2026-118641?
- High severity, with a CVSS score of 7.5, published 28 October 2026.
- Which products and versions are affected?
- N8n before 1.123.85, 2.x before 2.43.5, 2.44.x before 2.44.1.
- Is there a fix for CVE-2026-118641?
- Yes: fixed in n8n 1.123.85, 2.43.5, 2.44.1. Until then: Restrict n8n instance access to fully trusted users only. Audit active workflows using the Microsoft Outlook contact getAll operation or Microsoft SharePoint v1 item update/upsert operation and remove any bindings that pass untrusted external data into the affected parameters. Apply network-level controls to restrict access to webhook endpoints feeding into these workflows, or deactivate affected workflows until patched.</anigation> <parameter name="timeline">[{"kind": "disclosed", "at": "2026-10-14"}, {"kind": "advisory", "at": "2026-10-28"}] Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-118641 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-118641?
- Check whether you run N8n at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: n8n 1.123.85, 2.43.5, 2.44.1
Restrict n8n instance access to fully trusted users only. Audit active workflows using the Microsoft Outlook contact getAll operation or Microsoft SharePoint v1 item update/upsert operation and remove any bindings that pass untrusted external data into the affected parameters. Apply network-level controls to restrict access to webhook endpoints feeding into these workflows, or deactivate affected workflows until patched.</anigation> <parameter name="timeline">[{"kind": "disclosed", "at": "2026-10-14"}, {"kind": "advisory", "at": "2026-10-28"}]
Technical details
An OData $filter injection vulnerability in n8n's Microsoft Outlook and SharePoint v1 nodes allows attackers to break out of string literals by injecting single quotes into expression-bindable parameters without proper escaping. Exploitation requires the attacker to control untrusted input bound to the vulnerable parameters in an active workflow; successful exploitation grants access to all contacts in the bound mailbox or the ability to write to unintended SharePoint list items within the scope of the stored credential.
Affected products
- n8n n8n before 1.123.85, 2.x before 2.43.5, 2.44.x before 2.44.1