Reflected XSS via unescaped directory filter values
Published Feb 18, 2026 · Updated Feb 18, 2026
Reflected XSS in Ultimate Member 2.11.1 and earlier allows remote attackers to run scripts in a visitor's browser through filter parameters. The member-directory filtering path takes values such as filter_first_name from the query string and renders them as HTML instead of contextually escaped text. Exploitation requires a visitor to open a crafted member-directory link, enabling script execution in that site's browser origin.
Summary
What happened
Reflected XSS in Ultimate Member 2.11.1 and earlier allows remote attackers to run scripts in a visitor's browser through filter parameters. The member-directory filtering path takes values such as filter_first_name from the query string and renders them as HTML instead of contextually escaped text. Exploitation requires a visitor to open a crafted member-directory link, enabling script execution in that site's browser origin.
The record
- CVE
- CVE-2026-1404
- Published
- Feb 18, 2026
- Updated
- Feb 18, 2026
- Vendor
- Ultimate Member Group Ltd
- Product
- Ultimate Member
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 18, 2026CVE publishedPublication date reported by the CVE source.
- Feb 18, 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=* <=2.11.1
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
- CleanTalk reflected XSS proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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