Security Digest · Vulnerability record
CVE-2026-41264: Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
Flowise is a drag & drop user interface to build a customized large language model flow.
CVSS 9.2 Critical EPSS 1.4% · p73
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.4%, percentile 73: FIRST’s model estimates a 1.4% chance of exploitation activity in the next 30 days, higher than 73% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
flowise(npm) <= 3.0.13, fixed in 3.1.0;flowise-components(npm) <= 3.0.13, fixed in 3.1.0. Check your lockfile, including transitive dependencies.
What it is
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the specific flaw exists within the run method of the CSVAgents class. The issue results from the lack of proper sandboxing when evaluating an LLM generated python script. An attacker can leverage this vulnerability to execute code in the context of the user running the server. Using prompt injection techniques, an unauthenticated attacker with the ability to send prompts to a chatflow using the CSV Agent node may convince an LLM to respond with a malicious python script that executes attacker controlled commands on the Flowise server. This vulnerability is fixed in 3.1.0.
From the GitHub advisory
Abstract
Trend Micro's Zero Day Initiative has identified a vulnerability affecting FlowiseAI Flowise.
Vulnerability Details
- Version tested: 3.0.13 - Installer file: https://github.com/FlowiseAI/Flowise - Platform tested: Ubuntu 25.10
Analysis
Weakness type: CWE-184.
Product: flowise (npm) · Assigned by: GitHub_M · Published: 2026-04-23
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| npm | flowise | <= 3.0.13 | 3.1.0 |
| npm | flowise-components | <= 3.0.13 | 3.1.0 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| FlowiseAI | Flowise | < 3.1.0 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 4.0 | 9.2 Critical | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| GitHub | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
- Attack vector: network (remotely reachable)
- Attack complexity: high (needs special conditions)
- Attack requirements: present (depends on deployment conditions)
- Privileges required: none (no login)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc, automatable no, technical impact total.
- FIRST EPSS (model of 2026-10-21): 1.44% probability of exploitation activity in the next 30 days; percentile 73.
Timeline
- — GitHub-reviewed advisory GHSA-3hjv-c53m-58jj published (critical)
- — CVE record published by GitHub_M
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-3hjv-c53m-58jj github.com
- CVE.org record CVE-2026-41264 cve.org
- NVD entry CVE-2026-41264 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com