CVE-2022-0659: Sync iCloud COS < 2.0.1 - Admin+ Stored Cross-Site Scripting

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-03-14 · updated 2026-06-17
Weakness: CWE-79

Description

The Sync QCloud COS WordPress plugin before 2.0.1 does not escape some of its settings, allowing high privilege users such as admin to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Affected products

Sync QCloud COS: before 2.0.1 — fixed in 2.0.1

How to fix

Upgrade to a fixed version: Sync QCloud COS 2.0.1. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/22dc2661-ba64-49e7-af65-892a617ab02c
https://wpscan.com/vulnerability/22dc2661-ba64-49e7-af65-892a617ab02c

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