# CVE-2025-26319: FlowiseAI - Arbitrary File Upload

> Live exploitation tracking for CVE-2025-26319 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2025-26319

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 9.8
- **Public exploit available:** Yes
- **Affected products:** FlowiseAI Flowise
- **Weaknesses:** CWE-434 (Unrestricted Upload of File with Dangerous Type)
- **Tags:** web_application

## Description

FlowiseAI Flowise v2.2.6 was discovered to contain an arbitrary file upload vulnerability in /api/v1/attachments.

## CrowdSec analysis

[CVE-2025-26319](https://euvd.enisa.europa.eu/vulnerability/CVE-2025-26319) is a critical vulnerability in FlowiseAI Flowise that permits arbitrary file upload via a vulnerable attachments API endpoint, which can be abused to potentially achieve remote code execution.

CrowdSec has been tracking this vulnerability and its exploits since 28th of May 2025.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2025-26319 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning.
CrowdSec data also reveals a clear uptick in attacks involving CVE-2025-26319 over the past week. Activity is above the usual baseline, suggesting growing attention from attackers. This may reflect rising awareness, recent exploit releases, or expanded targeting efforts.

Exploitation attempts are typically identifiable through requests to URLs containing `/api/v1/attachments/` alongside path traversal sequences.

## Timeline

- 2025-03-04: CVE Published. CVE-2025-26319 is published to NVD.
- 2025-05-28: Rule Released. CrowdSec releases a rule to detect CVE-2025-26319 exploitation attempts against the CrowdSec Network.
- 2025-05-29: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2025-26319 for the first time.

## References

- https://github.com/dorattias/CVE-2025-26319
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-26319.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-26319) follows observed exploitation activity for CVE-2025-26319. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.