QuadLayers Checkout Field Manager: Missing authorization in media deletion
Summary
The WordPress plugin Checkout Field Manager (Checkout Manager) for WooCommerce up to and including version 7.9.6 does not verify that a user is authorized to delete media. An authenticated user with at least subscriber-level access can delete arbitrary Media Library attachments through the checkout file field attachment IDs. The attack requires a logged-in low-privileged account, for example on a shop with open customer registration.
Affected
- QuadLayers Checkout Field Manager (Checkout Manager) for WooCommerce, all versions up to and including 7.9.6
Fixed in
- Version 7.9.7 (fix listed in the WordPress.org plugin changelog)
Workaround
Unknown.
Exploitation
- Not listed in CISA KEV.
- CISA SSVC: exploitation none, automatable no.
- No public proof of concept found in the research notes.
- EPSS about 0.3%.
Our recommendation
- Update the plugin to version 7.9.7 or later.
- Restrict or review customer self-registration.
- Review media library deletion logs.
- Confirm that media backups are current.
- Related CVE-2026-87829 and CVE-2026-87831 are also fixed in 7.9.7.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- WordPress.org plugin page (changelog, fix in 7.9.7) wordpress.org
- Wordfence threat intelligence record www.wordfence.com
- Plugin Trac changeset 7.9.6 to 7.9.7 plugins.trac.wordpress.org
- Vulners CVE record CVE-2026-17031 vulners.com
- OpenCVE CVE-2026-17031 app.opencve.io
- VulDB entry 420477 vuldb.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 19:01.
Original description (NVD)
The Checkout Field Manager (Checkout Manager) for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.9.6 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary Media Library attachments.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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