Authenticated browser script execution via reflected input
Published Sep 21, 2022 · Updated Apr 28, 2026
Reflected XSS in Totalsoft Event Calendar – Calendar 1.4.6 and earlier allows remote authenticated users to inject browser script. Neither the CNA record nor its Patchstack advisory identifies the affected request parameter or code path, so the exact failure to sanitize or escape reflected input is undisclosed. Subscriber-level access and a victim action are required; successful exploitation runs attacker-controlled script in the victim's browser.
Summary
What happened
Reflected XSS in Totalsoft Event Calendar – Calendar 1.4.6 and earlier allows remote authenticated users to inject browser script. Neither the CNA record nor its Patchstack advisory identifies the affected request parameter or code path, so the exact failure to sanitize or escape reflected input is undisclosed. Subscriber-level access and a victim action are required; successful exploitation runs attacker-controlled script in the victim's browser.
The record
- CVE
- CVE-2022-36390
- Published
- Sep 21, 2022
- Updated
- Apr 28, 2026
- Vendor
- Totalsoft
- Product
- Event Calendar – Calendar
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 21, 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=<= 1.4.6 <=1.4.6
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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