Quick answers
- Is CVE-2026-15039 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-15039 being exploited in the wild.
- How severe is CVE-2026-15039?
- Critical severity, with a CVSS score of 9.8, published 12 August 2026.
- Which products and versions are affected?
- WP Swings Giftware before 4.2.10.
- Is there a fix for CVE-2026-15039?
- A patch was published on 2026-08-12: Fixed in version 4.2.10 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-15039 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-15039?
- Check whether you run WP Swings Giftware 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 vulnerability is an unauthenticated arbitrary file upload flaw in the plugin's add-to-cart upload handler. The vulnerable component fails to validate file types when processing gift card browse image uploads, accepting a .php file with an image Content-Type header. An attacker can craft a POST request to the product page (no authentication required, only a public nonce is needed) to upload a PHP payload, which is then written unchanged to wp-content/uploads/wps_browse/. The uploaded PHP file can be directly requested via HTTP to achieve remote code execution. The vulnerability was fixed in version 4.2.10.
Affected products
- WP Swings giftware before 4.2.10
Timeline
- 2026-08-10: disclosed: Publicly published on WPScan
- 2026-08-12: patched: Fixed in version 4.2.10
- 2026-08-12: advisory