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CVE-2021-42362

WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload

HIGH
8.8
CVSS Score
Published: November 17, 2021 at 05:44 PM UTC
Updated: June 17, 2026 at 04:09 AM UTC
2 products affected across 2 vendorsWordPress Popular PostsWordPress Popular Posts

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Severity
HIGH8.8
Exploit prediction
EPSS 80%

Description

The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, in versions up to and including 5.3.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/165376/WordPress-Popular-Posts-5.3.2-Remote-Code-Execution.html
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://blog.nintechnet.com/improper-input-validation-fixed-in-wordpress-popular-posts-plugin/
Patch
Source: [email protected]
https://github.com/cabrerahector/wordpress-popular-posts/commit/d9b274cf6812eb446e4103cb18f69897ec6fe601
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://plugins.trac.wordpress.org/changeset/2542638/wordpress-popular-posts/trunk/src/Image.php
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://wpscan.com/vulnerability/bd4f157c-a3d7-4535-a587-0102ba4e3009
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-42362

CVSS

8.8HIGHWordfence
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-434

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