7.5

CVE-2021-4355: uscnanbu welcart e-commerce Missing Authorization

CVSS: 7.5v3.1HighModified
Published 07-06-2023Last modified 08-04-2026
Open JSON

Vulnerability summary

CVE-2021-4355 is a high (CVSS 7.5) Missing Authorization vulnerability in uscnanbu welcart e-commerce. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 56% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 2.2.8.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.81%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 07-06-2023
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

Description

The Welcart e-Commerce plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on the download_orderdetail_list(), change_orderlist(), and download_member_list() functions called via admin_init hooks in versions up to, and including, 2.2.7. This makes it possible for unauthenticated attackers to download lists of members, products and orders.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.81%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

0.00 pp

From 0.81% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.81%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (blog.nintechnet.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Uscnanbu1 product
Welcart1 product
Wordpress1 product
  • usc-e-shop< 2.2.8

3 vendors · 3 products

References

3 links