---
id: CVE-2026-121509
title: >-
  Headless CMS Plugin REST API post get_required_post_data information
  disclosure
summary: >-
  A security flaw has been discovered in Headless CMS Plugin up to 2.0.4 on
  WordPress. This affects the function get_required_post_data of the file
  /wp-json/rae/v1/post of the component REST API. The manipulation of the
  argument post_id/po…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C'
cvssSource: cna
cwe:
  - CWE-200
  - CWE-284
product: Headless CMS Plugin
affected:
  - headless_cms_plugin 2.0.0
  - headless_cms_plugin 2.0.1
  - headless_cms_plugin 2.0.2
  - headless_cms_plugin 2.0.3
  - headless_cms_plugin 2.0.4
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-03T22:38:28.963409Z'
exploitAvailable: true
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T22:39:30.867Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121509'
references:
  - url: 'https://vuldb.com/vuln/430285'
    label: >-
      VDB-430285 | Headless CMS Plugin REST API post get_required_post_data
      information disclosure
  - url: 'https://vuldb.com/vuln/430285/cti'
    label: 'VDB-430285 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-121509'
    label: CVE-2026-121509 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1019400'
    label: >-
      Submit #1019400 | Imran Sayed Headless CMS 2.0.4 Exposure of Sensitive
      Information to an Unauthorized Actor
  - url: >-
      https://app.notion.com/p/Unauthenticated-disclosure-of-draft-private-and-future-post-contentimranhsayed-headless-cms-2-0-4-3f384f1ea6a48057bb67ed0dd89f4157?source=copy_link
tags:
  - cve.org
  - exploit-available
epss: 0.00377
epssPercentile: 0.31857
ingestedAt: '2026-11-05T20:33:06.600Z'
---

## Overview

A security flaw has been discovered in Headless CMS Plugin up to 2.0.4 on WordPress. This affects the function get_required_post_data of the file /wp-json/rae/v1/post of the component REST API. The manipulation of the argument post_id/post_slug results in information disclosure. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

## Affected

- `headless_cms_plugin 2.0.0`
- `headless_cms_plugin 2.0.1`
- `headless_cms_plugin 2.0.2`
- `headless_cms_plugin 2.0.3`
- `headless_cms_plugin 2.0.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.