Stored XSS via missing settings nonce validation
Published Jan 13, 2025 · Updated Apr 28, 2026
Stored XSS in SmartAgenda – Prise de rendez-vous en ligne 4.7 and earlier allows remote attackers to inject scripts via forged requests. The smartagenda_options_page_html() settings handler performs missing or incorrect nonce validation, allowing forged requests to update settings with malicious scripts. Exploitation requires an administrator to interact with attacker-controlled content; the stored script then executes in browsers that view affected pages.
Summary
What happened
Stored XSS in SmartAgenda – Prise de rendez-vous en ligne 4.7 and earlier allows remote attackers to inject scripts via forged requests. The smartagenda_options_page_html() settings handler performs missing or incorrect nonce validation, allowing forged requests to update settings with malicious scripts. Exploitation requires an administrator to interact with attacker-controlled content; the stored script then executes in browsers that view affected pages.
The record
- CVE
- CVE-2025-22506
- Published
- Jan 13, 2025
- Updated
- Apr 28, 2026
- Vendor
- Smart Agenda
- Product
- SmartAgenda – Prise de rendez-vous en ligne
- Classifications
- CWE-79, CAPEC-592, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 13, 2025CVE 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?
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- Affected versionversion=0 <=4.7 changes=[{"at":"4.8","status":"unaffected"}]
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
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Technologies
Your stack
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Your stack
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