CVE-2026-121509

MEDIUM 5.3

Headless CMS Plugin REST API post get_required_post_data information disclosure

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-200 CWE-284
Vendor	n/a
Product	headless cms plugin
Published	Nov 3, 2026

Stay Ahead of the Next One

Get instant alerts for n/a headless cms plugin

Be the first to know when new medium vulnerabilities affecting n/a headless cms plugin are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / Headless CMS Plugin

2.0.0 2.0.1 2.0.2 2.0.3 2.0.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/430285 vuldb.com: https://vuldb.com/vuln/430285/cti vuldb.com: https://vuldb.com/cve/CVE-2026-121509 vuldb.com: https://vuldb.com/submit/1019400 app.notion.com: https://app.notion.com/p/Unauthenticated-disclosure-of-draft-private-and-future-post-contentimranhsayed-headless-cms-2-0-4-3f384f1ea6a48057bb67ed0dd89f4157?source=copy_link

Credits

🔍 Rony Ahmed (VulDB User) VulDB CNA Team