CVE-2026-119978
8.5, highFlowise through 3.1.4 contains a sandbox escape vulnerability that allows authenticated users to execute OS commands by abusing…
- CVSS
- 8.5, high high CVSS v3.1
- EPSS, next 30 days
- n/a
- Exploitation
- No public evidence
- Published
- 30 Oct 2026yesterday
Description
Flowise through 3.1.4 contains a sandbox escape vulnerability that allows authenticated users to execute OS commands by abusing allowlisted langchain and mammoth modules when ALLOW_BUILTIN_DEP=true. Attackers can submit JavaScript to /api/v1/node-custom-function that writes a file into the mammoth package via LocalFileStore and requires it, escaping vm2 as the Flowise process user.
Details
- Vendor
- FlowiseAI
- Product
- Flowise
- Weakness
- CWE-749 (opens in a new tab)
- Status
- Deferred
- Updated
- 30 Oct 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
References 5
Other references 5
- github.com /FlowiseAI/Flowise (opens in a new tab)
- github.com /FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L1733 (opens in a new tab)
- github.com /FlowiseAI/Flowise/blob/a65f81bb43ef66d3ce734bf0dff4223ae8041c95/packages/components/src/utils.ts#L55-L114 (opens in a new tab)
- github.com /advisories/GHSA-9gvv-qjj3-2p6g (opens in a new tab)
- vulncheck.com /advisories/flowise-through-3.1.4-custom-function-sandbox-escape-rce-via-localfilestore (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other FlowiseAI CVEs
Every FlowiseAI CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-91929 FlowiseAI Flowise Missing Authorization Vulnerability EPSS 0.4% 7.1, high
- CVE-2026-91934 FlowiseAI Flowise Path Traversal Vulnerability EPSS 0.7% 8.8, high
- CVE-2026-90535 FlowiseAI Flowise Missing Authorization Vulnerability EPSS 0.5% 7.5, high
Beyond this page
Is CVE-2026-119978 in your network?
This page tells you how dangerous CVE-2026-119978 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
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EXYS7600 OCELOT
Find it before attackers do
Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-119978 comes with the devices to patch.
Learn more about EXYS7600 OCELOT -
EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
Learn more about EXYS7950 KONDRA
Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 31 Oct 2026, not the live upstream state.