CVE-2026-39504: InstaWP InstaWP Connect missing authorization

CVE-2026-39504 · Severity: medium · CVSS 5.4 · Published 2026-04-08

InstaWP Connect, a WordPress plugin used to connect sites to the InstaWP staging platform, contains a security flaw in its access control settings. This vulnerability allows logged-in users with low-level permissions, such as subscribers, to perform actions or access information they should not be authorized to see. While the impact is considered moderate, it could lead to unauthorized changes or data exposure on the affected WordPress site.

Technologies: InstaWP Connect. Vendors: InstaWP.

Quick answers

Is CVE-2026-39504 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-39504 being exploited in the wild.
How severe is CVE-2026-39504?
Medium severity, with a CVSS score of 5.4, published 8 April 2026.
Which products and versions are affected?
InstaWP Connect <= 0.1.2.5.
Is there a fix for CVE-2026-39504?
A patch was published on 2026-03-11: Patch released in version 0.1.2.7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-39504 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-39504?
Check whether you run InstaWP Connect 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

A missing authorization vulnerability (CWE-862) exists in the InstaWP Connect plugin for WordPress through version 0.1.2.5. The flaw stems from incorrectly configured access control security levels within the plugin's functional logic. A remote attacker with basic 'Subscriber' level authentication can exploit this to execute functions or access data that should be restricted to higher-privileged users. The vulnerability is resolved in version 0.1.2.7.

Affected products

  • InstaWP InstaWP Connect <= 0.1.2.5

Timeline

  • 2026-02-09: other: Reported by researcher Nabil Irawan
  • 2026-03-11: disclosed: Initial disclosure by Patchstack
  • 2026-04-08: advisory: CVE published to NVD
  • 2026-03-11: patched: Patch released in version 0.1.2.7

References

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