How severe is CVE-2021-4355?

CVE-2021-4355 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-4355 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4355?

CVE-2021-4355 affects Welcart Welcart E-commerce. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4355?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-4355 published?

CVE-2021-4355 was published on 2023-06-07 and last updated on 2026-06-17.

CVE-2021-4355

CVE-2021-4355 is a high-severity vulnerability in Welcart Welcart E-commerce with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Welcart Welcart E-commerce
Published: 2023-06-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-4355?: 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.
How severe is CVE-2021-4355?: CVE-2021-4355 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-4355 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4355?: CVE-2021-4355 affects Welcart Welcart E-commerce. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4355?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-4355 published?: CVE-2021-4355 was published on 2023-06-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:welcart:welcart_e-commerce:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Welcart Welcart E-commerce

CVE-2023-5952 — Critical (CVSS 9.8): The Welcart e-Commerce WordPress plugin before 2.9.5 unserializes user input from cookies, which could allow…
CVE-2025-27130 — High (CVSS 8.8): Welcart e-Commerce 2.11.6 and earlier versions contains an untrusted data deserialization vulnerability. If this…
CVE-2024-42404 — High (CVSS 8.8): SQL injection vulnerability in Welcart e-Commerce prior to 2.11.2 allows an attacker who can login to the product to…
CVE-2023-5953 — High (CVSS 8.8): The Welcart e-Commerce WordPress plugin before 2.9.5 does not validate files to be uploaded, as well as does not have…
CVE-2023-43610 — High (CVSS 8.8): SQL injection vulnerability in Order Data Edit page of Welcart e-Commerce versions 2.7 to 2.8.21 allows a user with…
CVE-2022-4237 — High (CVSS 8.8): The Welcart e-Commerce WordPress plugin before 2.8.6 does not validate user input before using it in file_exist()…

All CVEs affecting Welcart Welcart E-commerce →

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…
CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →