CVE-2023-0893: Time Sheets < 1.29.3 - Admin+ Stored XSS

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-04-10 · updated 2026-06-17
Weakness: CWE-79

Description

The Time Sheets WordPress plugin before 1.29.3 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Affected products

Time Sheets: before 1.29.3 — fixed in 1.29.3

How to fix

Upgrade to a fixed version: Time Sheets 1.29.3. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/fd6ef6ee-15e9-44ac-a2db-976393a3b71a
https://wpscan.com/vulnerability/fd6ef6ee-15e9-44ac-a2db-976393a3b71a

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