Vulnerability in Posimyth Nexter Blocks

CVE-2026-39516

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in POSIMYTH Nexter Blocks the-plus-addons-for-block-editor allows Retrieve Embedded Sensitive Data.This issue affects Nexter Blocks: from n/a through <= 4.7.0.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-39516: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-39516?
CVE-2026-39516 is a medium-severity vulnerability in Posimyth Nexter Blocks, classified under Exposure of Sensitive System Information to an Unauthorized Control Sphere. CVSS score: 5.3/10. Published 2026-04-08.
How severe is CVE-2026-39516?
Medium severity. CVSS v3 base score is 5.3 out of 10.