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CVE-2020-28339

28
FAUCET Score

CVE-2020-28339 describes an Object Injection vulnerability in the usc-e-shop (Collne Welcart e-Commerce) plugin for WordPress, affecting versions prior to 1.9.36. This high-severity vulnerability, rated 8.8 CVSS, allows an authenticated attacker to achieve high impact on confidentiality, integrity, and availability without user interaction. While a complete POP chain is not available, there is currently no public exploit code, Metasploit module, or Nuclei template, and it is not listed on the CISA KEV catalog. Community discussion and media coverage for this CVE are minimal, indicating low public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.9.36CPE matchmatch criteria
cpe:2.3:a:welcart:welcart_e-commerce:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.88%
Probability of exploitation in next 30 days
EPSS Percentile
77.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0188 is in the 76th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

wordpress.org / plugins/usc-e-shop
ProductThird Party Advisory
wordfence.com / blog/2020/11/object-injection-vulnerability-in-welcart-e-commerce-plugin
ExploitThird Party Advisory