# CVE-2026-1631: Smash Balloon Feeds for YouTube unauthorized license deletion

Source: https://junglewise.ai/threats/cve-2026-1631-smash-balloon-feeds-for-youtube-unauthorized-license-deletion  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-18. Updated: 2026-05-18  
License: CC BY 4.0 with a link back

CVE-2026-1631 · Severity: info · CVSS 5.4 · Published 2026-05-18

The Feeds for YouTube plugin for WordPress is used to display YouTube videos and galleries on websites. A security flaw allows any logged-in user, including those with low-level 'Subscriber' permissions, to delete the plugin's license key. This can result in the loss of premium features and disrupt the plugin's ability to fetch or display content correctly.

Vendors: [Smash Balloon](https://junglewise.ai/threats/vendors/smash-balloon).

## Quick answers

**Is CVE-2026-1631 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-1631 being exploited in the wild.

**How severe is CVE-2026-1631?** Informational severity, with a CVSS score of 5.4, published 18 May 2026.

**Which products and versions are affected?** Smash Balloon Feeds for YouTube < 2.6.4.

**Is there a fix for CVE-2026-1631?** A patch was published on 2026-04-27: Fixed in version 2.6.4 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-1631 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-1631?** Check whether you run Smash Balloon Feeds for YouTube at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The Feeds for YouTube plugin for WordPress (versions prior to 2.6.4) fails to implement proper authorization checks on its 'actions' function, specifically within the AJAX handler 'sby_recheck_connection'. This vulnerability allows authenticated users with Subscriber-level privileges or higher to send a crafted POST request to admin-ajax.php that triggers the deletion of critical license information stored in the WordPress options table (specifically 'sby_islicence_upgraded' and 'sby_upgraded_info'). An attacker can effectively deactivate premium functionality by wiping these license records. The issue is addressed in version 2.6.4.

## Affected products

- Smash Balloon Feeds for YouTube (YouTube video, channel, and gallery plugin) < 2.6.4

## Timeline

- 2026-04-27: disclosed: Initial public disclosure by WPScan
- 2026-04-27: patched: Fixed in version 2.6.4
- 2026-05-18: advisory: NVD publication date

## References

- [https://wpscan.com/vulnerability/b19596c2-69bc-4e15-8632-eb80f4577e3c/](https://wpscan.com/vulnerability/b19596c2-69bc-4e15-8632-eb80f4577e3c/)