CVE-2026-121509 (GCVE-0-2026-121509)
Vulnerability from cvelistv5 – Published: 2026-11-03 20:30 – Updated: 2026-11-03 22:39
VLAI
EPSS
VEX
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/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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 22:38 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/430285 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/430285/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-121509 | third-party-advisory |
| https://vuldb.com/submit/1019400 | third-party-advisory |
| https://app.notion.com/p/Unauthenticated-disclosu… | exploit |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | Headless CMS Plugin |
Affected:
2.0.0
Affected: 2.0.1 Affected: 2.0.2 Affected: 2.0.3 Affected: 2.0.4 cpe:2.3:a:headless_cms_plugin:headless_cms_plugin:*:*:*:*:*:*:*:* |
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