CVE-2026-86783CWE-200information-disclosure

CVE-2026-86783

Medium · published September 23, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
10.1
In the wild
Unconfirmed
What it is

The Post Grid Gutenberg Blocks WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00206 · 10.1th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-09-23T10:17Z
References (1)
https://wpscan.com/vulnerability/719fc130-748b-4bad-8091-2858664299ed/ · [email protected]
EPSS history
Timeline
  • 24 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 23 SEP 06:00Z
    PostX < 5.0.41 - Unauthenticated Custom Field Key Disclosure via REST API
    cvelistv5