CVE-2026-73487 Flowise before 3.1.3 Prompt Injection RCE via CSV Agent

What is CVE-2026-73487?

CVE-2026-73487 is a critical code injection vulnerability in Flowiseai Flowise, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Flowise before 3.1.3 contains a regex-based Python code validator bypass in CSV and Airtable Agent nodes that allows unauthenticated attackers to inject malicious code via prompt injection. Attackers can exploit unblocked pandas functions like pd.read_json() to exfiltrate datasets, perform SSRF against internal services, or achieve code execution through the unauthenticated prediction API.

Weakness: CWE-94

Which versions are affected by CVE-2026-73487?

4 open source packages ship an affected version, including flowise and flowise-components. It affects 1 product.

Products include Flowiseai Flowise.

How do I fix CVE-2026-73487?

Upgrade flowise to 3.1.3 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-73487 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73487 exists.

Other vulnerabilities in Flowiseai Flowise

• CVE-2025-71338 Flowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store API Critical 10.0
• CVE-2026-40933 Flowise: Authenticated RCE Via MCP Adapters Critical 10.0
• CVE-2025-61913 Flowise is vulnerable to arbitrary file read, arbitrary file write Critical 10.0
• CVE-2025-59528 Flowise has Remote Code Execution vulnerability Critical 10.0
• CVE-2026-52098 Code injection in n/a Critical 9.8

All Flowiseai Flowise vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-w7x8-q2gp-5cgg.