Headless CMS Plugin up to 2.0.4 on WordPress REST API /wp-json/rae/v1/post get_required_post_data post_id/post_slug information disclosure

Summaryinfo

A vulnerability identified as problematic has been detected in Headless CMS Plugin up to 2.0.4 on WordPress. This impacts the function get_required_post_data of the file /wp-json/rae/v1/post of the component REST API. This manipulation of the argument post_id/post_slug causes information disclosure. This vulnerability is registered as CVE-2026-121509. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability has been found in Headless CMS Plugin up to 2.0.4 on WordPress and classified as problematic. Affected by this vulnerability is 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 with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The advisory is shared at app.notion.com. This vulnerability is known as CVE-2026-121509. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1592 for this issue.

It is possible to download the exploit at app.notion.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Name

• Headless CMS Plugin

Version

• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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Submitinfo

Accepted

• Submit #1019400: Imran Sayed Headless CMS 2.0.4 Exposure of Sensitive Information to an Unauthorized Actor (by Rony Ahmed)

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