TI-2020-17186 Aliases CVE-2020-28339 GHSA-vh49-3q2g-93gh

The usc-e-shop (aka Collne Welcart e-Commerce) plugin before 1.9.36 for WordPress allows…

MEDIUM 42CWE-502Published 2020-11-07 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-502.

Summary

The usc-e-shop (aka Collne Welcart e-Commerce) plugin before 1.9.36 for WordPress allows Object Injection because of usces_unserialize. There is not a complete POP chain.

Why it matters now

EPSS 0.01902 79th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:welcart:welcart_e-commerce::::::wordpress::*	before 1.9.36	Vulnerable	uscnanbu

cpe:2.3:a:welcart:welcart_e-commerce:*:*:*:*:*:wordpress:*:* Versions before 1.9.36 Vulnerable ·uscnanbu

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-28339
2026-10-03 Alias added: GHSA-vh49-3q2g-93gh

References

Exploit 1

https://www.wordfence.com/blog/2020/11/object-injection-vulnerability-in-welcart-e-commerce-plugin/

Advisory 1

https://wordpress.org/plugins/usc-e-shop/#developers

TI-2023-05484 Welcart e-Commerce < 2.9.5 - Subscriber+ Arbitrary File Upload CVSS 3.1HIGH 8.8
TI-2022-03880 Welcart e-Commerce < 2.8.6 - Subscriber+ PHAR Deserialisation CVSS 3.1HIGH 8.8
TI-2022-03786 Welcart e-Commerce < 2.8.5 - Unauthenticated Arbitrary File Access CVSS 3.1HIGH 7.5
TI-2022-03879 Welcart e-Commerce < 2.8.5 - Subscriber+ Arbitrary File Access CVSS 3.1MEDIUM 6.5
TI-2022-03618 Welcart e-Commerce < 2.8.4 - Subscriber+ Arbitrary Shipping Method Creation/Update/Deletion CVSS 3.1MEDIUM 6.5
TI-2023-05482 Welcart e-Commerce < 2.9.5 - Reflected XSS CVSS 3.1MEDIUM 6.1

See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences