01 Record
CVE-2021-42362
WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload
HighPUBLISHEDCNA: Wordfence
CNA base score8.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
02 Description
WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 79.82% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.5% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-11-17 17:44Z4 YR AGO
- Last updated
- 2024-09-16 18:45Z2 YR AGO
- Reserved
- 2021-10-14
- Assigning CNA
- Wordfence
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-434Unrestricted Upload of File with Dangerous TypeBase
- Data version
- 5.1
- Document digest
- 694f4b9a6aac8c34cbed4d660362b8404c7ad767deda2edafcaa2e3dcf4a1a55
05 Affected products
VendorProductVersionsPlatforms
06 References
- blog.nintechnet.comhttps://blog.nintechnet.com/improper-input-validation-fixed-in-wordpress-popular-posts-plugin/
- www.wordfence.comhttps://www.wordfence.com/vulnerability-advisories/#CVE-2021-42362
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/changeset/2542638/wordpress-popular-posts/trunk/src/Image.php
- wpscan.comhttps://wpscan.com/vulnerability/bd4f157c-a3d7-4535-a587-0102ba4e3009
- packetstormsecurity.comhttp://packetstormsecurity.com/files/165376/WordPress-Popular-Posts-5.3.2-Remote-Code-Execution.html
- github.comhttps://github.com/cabrerahector/wordpress-popular-posts/commit/d9b274cf6812eb446e4103cb18f69897ec6fe601
07 Remediation
Update to version 5.3.3 or newer.