# CVE-2026-1405: Slider Future - Arbitrary File Upload

> Live exploitation tracking for CVE-2026-1405 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-2026-1405

## 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:** Franchidesign Slider Future
- **Weaknesses:** CWE-434 (Unrestricted Upload of File with Dangerous Type)
- **Tags:** wordpress, cms

## Description

The Slider Future plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'slider_future_handle_image_upload' function in all versions up to, and including, 1.0.5. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

## CrowdSec analysis

[CVE-2026-1405](https://euvd.enisa.europa.eu/vulnerability/CVE-2026-1405) is a critical vulnerability in the Slider Future WordPress plugin that allows unauthenticated attackers to upload arbitrary files due to insufficient file type validation. Exploiting this flaw could enable remote code execution, giving attackers full control over the affected website’s server and potentially leading to data theft, website defacement, or further compromise.

CrowdSec has been tracking this vulnerability and its exploits since 1st of April 2026.

CrowdSec network observations suggest that most exploitation of CVE-2026-1405 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental.
Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2026-1405 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2026-1405 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Attackers exploit the `/wp-json/slider-future/v1/upload-image/` endpoint to upload arbitrary files without authentication, leveraging the lack of file type validation in vulnerable WordPress Slider Future plugin versions.

## Timeline

- 2026-02-19: CVE Published. CVE-2026-1405 is published to NVD.
- 2026-04-01: Rule Released. CrowdSec releases a rule to detect CVE-2026-1405 exploitation attempts against the CrowdSec Network.
- 2026-04-08: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2026-1405 for the first time.

## References

- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-1405.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2026-1405) follows observed exploitation activity for CVE-2026-1405. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.