Quick answers
- Is CVE-2026-39516 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-39516 being exploited in the wild.
- How severe is CVE-2026-39516?
- Medium severity, with a CVSS score of 5.3, published 8 April 2026.
- Which products and versions are affected?
- POSIMYTH Innovations Nexter Blocks <= 4.7.0.
- Is there a fix for CVE-2026-39516?
- A patch was published on 2026-04-08: Version 4.7.1 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-39516 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-39516?
- Check whether you run POSIMYTH Innovations Nexter Blocks 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 'Sensitive Data Exposure' vulnerability (CWE-497) exists in the POSIMYTH Nexter Blocks plugin (the-plus-addons-for-block-editor) for WordPress. The flaw allows an unauthenticated remote attacker to retrieve sensitive system information that is improperly exposed to an unauthorized control sphere. This occurs because the plugin fails to adequately restrict access to certain embedded data within the block editor environment. An attacker can exploit this by sending a crafted network request to the affected site, potentially gaining insights into the system configuration or other internal metadata. The issue is resolved in version 4.7.1.
Affected products
- POSIMYTH Innovations Nexter Blocks (the-plus-addons-for-block-editor) <= 4.7.0
Timeline
- 2026-02-24: disclosed: Reported by Bao - BlueRock
- 2026-03-26: advisory: Patchstack published advisory
- 2026-04-08: advisory: CVE published to NVD
- 2026-04-08: patched: Version 4.7.1 released to address the vulnerability