# CVE-2026-86707: WordPress Private Feed Key authentication bypass

Source: https://junglewise.ai/threats/cve-2026-86707-wordpress-private-feed-key-authentication-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-17. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-86707 · Severity: critical · CVSS 9.8 · Published 2026-09-17

The Private Feed Key WordPress plugin allows unauthenticated attackers to log in as any user, including site administrators, by exploiting a weak authentication mechanism. An attacker can bypass login requirements by crafting a request with any value that matches stored user metadata, rather than a legitimate feed key. This enables complete account takeover and administrative access to WordPress sites running the affected plugin.

Vendors: [Unknown](https://junglewise.ai/threats/vendors/unknown).

## Quick answers

**Is CVE-2026-86707 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-86707 being exploited in the wild.

**How severe is CVE-2026-86707?** Critical severity, with a CVSS score of 9.8, published 17 September 2026.

**Which products and versions are affected?** Unknown Private Feed Key through 0.1.

**Is there a fix for CVE-2026-86707?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-86707 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-86707?** Check whether you run Unknown Private Feed Key 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 authentication bypass (CWE-287) in the Private Feed Key WordPress plugin through version 0.1. The plugin fails to verify that a supplied feedkey parameter is a legitimate key it previously issued; instead, it matches the parameter against any stored user metadata value. An unauthenticated attacker can log in as any user by providing a feedkey value that corresponds to an existing user's metadata field. No authentication, privileged access, or user interaction is required. The attack is network-reachable and allows account takeover including administrative access. No patch has been released as of the advisory date.

## Affected products

- <UNKNOWN> Private Feed Key through 0.1

## Timeline

- 2026-09-15: disclosed
- 2026-09-17: advisory

## References

- [https://wpscan.com/vulnerability/fbf22345-4e8c-4719-a9c3-5e606b6fd77f/](https://wpscan.com/vulnerability/fbf22345-4e8c-4719-a9c3-5e606b6fd77f/)