CVE-2026-121509
Headless CMS Plugin REST API post get_required_post_data information disclosure
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Headless CMS Plugin n/a |
2.0.0 (affected) 2.0.1 (affected) 2.0.2 (affected) 2.0.3 (affected) 2.0.4 (affected) |
CNA: VulDB |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.9 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P | CNA: VulDB |
| 3.1 / 5.3 medium |
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 | CNA: VulDB |
| 3.0 / 5.3 medium |
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C | CNA: VulDB |
| 2.0 / 5.0 medium |
AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:C | CNA: VulDB |
| 4.0 / 5.5 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | NVD: [email protected] |
| 2.0 / 5.0 medium |
AV:N/AC:L/Au:N/C:P/I:N/A:N | NVD: [email protected] |
Exploit evidence
References
- https://vuldb.com/vuln/430285CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/430285/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-121509CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1019400CNA: VulDB · third-party-advisory
- https://app.notion.com/p/Unauthenticated-disclosure-of-draft-private-and-future-post-contentimranhsayed-headless-cms-2-0-4-3f384f1ea6a48057bb67ed0dd89f4157?source=copy_linkCNA: VulDB · exploit
- https://app.notion.com/p/Unauthenticated-disclosure-of-draft-private-and-future-post-contentimranhsayed-headless-cms-2-0-4-3f384f1ea6a48057bb67ed0dd89f4157?source=copy_link[email protected]
- https://vuldb.com/cve/CVE-2026-121509[email protected]
- https://vuldb.com/submit/1019400[email protected]
- https://vuldb.com/vuln/430285[email protected]
- https://vuldb.com/vuln/430285/cti[email protected]
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