CVE-2026-73487
Unauthenticated prompt-injection in Flowise <3.1.3 enables code execution and data exfiltration
Is CVE-2026-73487 being exploited?
Not confirmed. CVE-2026-73487 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.96% probability of exploitation in the next 30 days.
How severe is CVE-2026-73487?
CVE-2026-73487 is rated Critical with a CVSS score of 9.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-73487?
Yes. A fix has been recorded for CVE-2026-73487. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73487 affect?
CVE-2026-73487 affects Flowise < 3.1.3, Flowise CSV Agent, Flowise Airtable Agent, Flowise unauthenticated prediction API. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73487?
Upgrade Flowise to >=3.1.3, restrict API access, sanitize inputs, and audit logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can inject prompts to run Python (CWE-94), exfiltrate datasets via pd.read_json, perform SSRF, or achieve code execution via the prediction API.
Immediate action required
- affected< 3.1.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.