Vulnerability · Published Aug 13, 2026 · Assigned by VulnCheck
CVE-2026-73484Flowise before 3.1.3 Sandbox Escape via Pandas Methods
High 8.6
In plain English
A high-severity security flaw in Flowise from FlowiseAI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 4.0)8.6High
Exploit odds (30 days)0.4%top 62.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Flowise before 3.1.3 contains a sandbox escape vulnerability in pythonCodeValidator.ts that fails to block native Pandas DataFrame methods like to_csv, to_json, pipe, and query. Authenticated attackers can exploit this to exfiltrate uploaded CSV data or write arbitrary files to the server filesystem.
Affected products (as reported)
Weakness: CWE-184 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References
- GitHub Security Advisory (GHSA-x58f-9m57-qc4m) vendor-advisory
- VulnCheck Advisory: Flowise before 3.1.3 Sandbox Escape via Pandas Methods third-party-advisory