Simple Post <= 1.1 - Authenticated Stored Cross-Site Scripting (XSS)
Priority MEDIUM 58CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The Simple Post WordPress plugin through 1.1 does not sanitize user input when an authenticated user Text value, then it does not escape these values when outputting to the browser leading to an Authenticated Stored XSS Cross-Site Scripting issue.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00506 43rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
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 Post | up to 1.1 | — | No fix listed | CNA |
- Simple Post VendorUnknown Affected up to 1.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:nickmomrik:simple_post:*:*:*:*:*:wordpress:*:* | up to 1.1 | Vulnerable | Nickmomrik |
- cpe:2.3:a:nickmomrik:simple_post:*:*:*:*:*:wordpress:*:* Versions up to 1.1 Vulnerable ·Nickmomrik
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-24567
- 2026-10-03 Alias added: GHSA-6552-h6m4-jfx9
References
Sources
- CVE-2021-24567 · CVE Program
- CVE-2021-24567 · NVD
- FIRST EPSS
- GHSA-6552-h6m4-jfx9 · 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