Stored XSS via improperly escaped activation code
Published Sep 6, 2022 · Updated Apr 8, 2026
Stored XSS in Ryan Petersen Simple Banner 2.11.0 and earlier allows remote authenticated users to inject scripts through an activation-code setting. The settings handler stores pro_version_activation_code and renders it in an HTML attribute after only backslash-escaping quotes, without contextual sanitization or entity encoding. An account needs access to Simple Banner settings, and the payload runs in another permitted user's browser when that user opens the settings page and interacts with the Activation Code field.
Summary
What happened
Stored XSS in Ryan Petersen Simple Banner 2.11.0 and earlier allows remote authenticated users to inject scripts through an activation-code setting. The settings handler stores pro_version_activation_code and renders it in an HTML attribute after only backslash-escaping quotes, without contextual sanitization or entity encoding. An account needs access to Simple Banner settings, and the payload runs in another permitted user's browser when that user opens the settings page and interacts with the Activation Code field.
The record
- CVE
- CVE-2022-2515
- Published
- Sep 6, 2022
- Updated
- Apr 8, 2026
- Vendor
- Ryan Petersen
- Product
- Simple Banner
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 6, 2022CVE publishedPublication date reported by the CVE source.
- Apr 8, 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=0 <=2.11.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- WordPress Simple Banner 2.11.0 stored XSS proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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