Threat Intelligence / CVE / CVE-2026-73487

CVE-2026-73487 — FlowiseAI Flowise

CVSS v3.1 9.8 (CRITICAL) · CVSS v4.0 9 · EPSS 0.9% (higher than 59.4% of all scored CVEs) · Priority 7.3/10 · Published 2026-08-13

As of 2026-08-14, CVE-2026-73487 is a CRITICAL-severity vulnerability in FlowiseAI Flowise, CVSS v3.1 9.8, EPSS 0.9% (59.4th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-73487, most recently “Endor Labs Discloses 14 Critical/High Vulnerabilities Across Seven AI Orchestration Platforms (NocoBase, Flowise, Langflow, Dify, Activepieces, Kestra, Apache Airflow)”.

Last updated: 2026-08-14

What is CVE-2026-73487?

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.

The record classifies CVE-2026-73487 under weakness class CWE-94. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 30 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 9.8 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0 base score: 9
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
EPSS (FIRST): 0.9% probability of exploitation in the next 30 days, higher than 59.4% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 7.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-08-13, last modified 2026-08-14

Is CVE-2026-73487 being exploited?

No public exploitation evidence for CVE-2026-73487 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-08-14. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.

Affected products and versions

FlowiseAI: Flowise

How to fix CVE-2026-73487

Vendor advisory: https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-w7x8-q2gp-5cgg. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2026-73487

1 tracked threat in the Threadlinqs corpus references CVE-2026-73487, either in the campaign’s CVE list or as an indicator on the campaign record.

Endor Labs Discloses 14 Critical/High Vulnerabilities Across Seven AI Orchestration Platforms (NocoBase, Flowise, Langflow, Dify, Activepieces, Kestra, Apache Airflow) — CRITICAL · 2026-09-10

Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-09-11. This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch

github.com — vendor advisory

Third-party advisory

vulncheck.com — third party advisory

Full detection coverage & IOCs for threats exploiting CVE-2026-73487 are available via the Threadlinqs MCP server (Purple tier). View plans →

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