WordPress Popular Posts plugin <= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability
Priority LOW 26CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- 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 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions <= 5.3.3). Vulnerable at &widget-wpp[2][post_type].
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00585 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| Hector Cabrera | WordPress Popular Posts | 5.3.3 – 5.3.3 | — | No fix listed | CNA |
- WordPress Popular Posts VendorHector Cabrera Affected 5.3.3 – 5.3.3 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wordpress_popular_posts_project:wordpress_popular_posts:*:*:*:*:*:wordpress:*:* | up to 5.3.3 | Vulnerable | Hector Cabrera |
- cpe:2.3:a:wordpress_popular_posts_project:wordpress_popular_posts:*:*:*:*:*:wordpress:*:* Versions up to 5.3.3 Vulnerable ·Hector Cabrera
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-36872
- 2026-10-03 Alias added: GHSA-4g64-jfhc-95g2
References
More Hector Cabrera Wordpress Popular Posts vulnerabilities
- TI-2021-18778 WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload CVSS 3.1HIGH 8.8
- TI-2022-21260 External initialization of trusted variables or data stores vulnerability exists in… CVSS 3.1HIGH 7.5
- TI-2023-24410 WordPress WordPress Popular Posts Plugin <= 6.3.2 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 6.5
- TI-2021-03972 Cross-site scripting in Hector Cabrera WordPress Popular Posts CVSS 3.1MEDIUM 5.4
Sources
- CVE-2021-36872 · CVE Program
- CVE-2021-36872 · NVD
- FIRST EPSS
- GHSA-4g64-jfhc-95g2 · 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