Stored XSS via unsanitized administrative settings
Published Apr 15, 2022 · Updated Apr 28, 2026
Stored XSS in Florent Maillefaud WP Maintenance 6.0.7 and earlier allows remote authenticated users to inject scripts via settings. Multiple administrative settings inputs are stored without sufficient sanitization and rendered without adequate output escaping. Administrator privileges are required to plant the payload; it executes when another user opens an affected page, exposing or altering browser-accessible data.
Summary
What happened
Stored XSS in Florent Maillefaud WP Maintenance 6.0.7 and earlier allows remote authenticated users to inject scripts via settings. Multiple administrative settings inputs are stored without sufficient sanitization and rendered without adequate output escaping. Administrator privileges are required to plant the payload; it executes when another user opens an affected page, exposing or altering browser-accessible data.
The record
- CVE
- CVE-2021-36828
- Published
- Apr 15, 2022
- Updated
- Apr 28, 2026
- Vendor
- Florent Maillefaud
- Product
- WP Maintenance
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Apr 15, 2022CVE publishedPublication date reported by the CVE source.
- Apr 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=n/a <=6.0.7 changes=[{"at":"6.0.8","status":"unaffected"}]
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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