Simple Restrict < 1.2.9 - Contributor+ Restricted Content Disclosure via REST API
Priority MEDIUM 47CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.
Summary
The Simple Restrict WordPress plugin before 1.2.9 does not enforce its content-restriction permission check on the REST API the way it does on the front end, relying there on a generic capability check instead of the Simple Restrict WordPress plugin before 1.2.9's own permission system, allowing users with contributor-level access or above to read the content of restricted posts and pages they were never granted access to.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00299 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Simple Restrict (Unknown): 1.2.9
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Simple Restrict | before 1.2.9 | 1.2.9 | Patch available | CNA |
- Simple Restrict VendorUnknown Affected before 1.2.9 Fixed in 1.2.9 Patch available CNA
Remediation
- Fix · CNA Simple Restrict (Unknown) Fixed in 1.2.9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15939
- 2026-10-03 Alias added: GHSA-4v4h-6mhp-rwxf
References
Sources
- CVE-2026-15939 · CVE Program
- CVE-2026-15939 · NVD
- FIRST EPSS
- GHSA-4v4h-6mhp-rwxf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences