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CVE-2021-20746

20
FAUCET Score

CVE-2021-20746 is a cross-site scripting (XSS) vulnerability affecting WordPress Popular Posts plugin versions 5.3.2 and earlier, allowing an authenticated attacker to inject malicious scripts. Rated Medium severity (CVSS 5.4), it requires user interaction and authenticated access, potentially leading to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.3.2CPE matchmatch criteria
cpe:2.3:a:wordpress_popular_posts_project:wordpress_popular_posts:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.44%
Probability of exploitation in next 30 days
EPSS Percentile
70.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0144 is in the 96th percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cabrerahector.com
Vendor Advisory
cabrerahector.com / wordpress/wordpress-popular-posts-5-3-improved-php-8-support-retina-display-support-and-more
Vendor Advisory
jvn.jp / en/jp/JVN63066062/index.html
Third Party Advisory
wordpress.org / plugins/wordpress-popular-posts
ProductRelease NotesThird Party Advisory