CVE-2026-1404: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the filter parameters (e.g., 'filter_first_name') in all versions up to, and including, 2.11.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
AI Analysis
Technical Summary
CVE-2026-1404 is a reflected cross-site scripting vulnerability in the Ultimate Member WordPress plugin (up to version 2.11.1). The issue occurs due to improper neutralization of input in filter parameters, enabling unauthenticated attackers to inject malicious scripts. Successful exploitation requires user interaction, such as clicking a crafted link, which then executes the injected script in the context of the victim's browser session. This vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 6.1 with network attack vector, low attack complexity, no privileges required, user interaction needed, and impacts confidentiality and integrity with no impact on availability.
Potential Impact
Exploitation of this vulnerability can lead to execution of arbitrary scripts in the context of the victim's browser, potentially allowing theft of sensitive information, session hijacking, or other actions limited by the victim's privileges. The impact is limited to confidentiality and integrity, with no direct availability impact. The attack requires user interaction and no authentication is needed to initiate the attack.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution with links involving the affected plugin's filter parameters and consider disabling or restricting the plugin if possible. Monitoring for updates from the Ultimate Member plugin vendor is recommended to apply any forthcoming patches promptly.
CVE-2026-1404: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin
Description
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the filter parameters (e.g., 'filter_first_name') in all versions up to, and including, 2.11.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1404 is a reflected cross-site scripting vulnerability in the Ultimate Member WordPress plugin (up to version 2.11.1). The issue occurs due to improper neutralization of input in filter parameters, enabling unauthenticated attackers to inject malicious scripts. Successful exploitation requires user interaction, such as clicking a crafted link, which then executes the injected script in the context of the victim's browser session. This vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 6.1 with network attack vector, low attack complexity, no privileges required, user interaction needed, and impacts confidentiality and integrity with no impact on availability.
Potential Impact
Exploitation of this vulnerability can lead to execution of arbitrary scripts in the context of the victim's browser, potentially allowing theft of sensitive information, session hijacking, or other actions limited by the victim's privileges. The impact is limited to confidentiality and integrity, with no direct availability impact. The attack requires user interaction and no authentication is needed to initiate the attack.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution with links involving the affected plugin's filter parameters and consider disabling or restricting the plugin if possible. Monitoring for updates from the Ultimate Member plugin vendor is recommended to apply any forthcoming patches promptly.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-01-24T01:06:30.523Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6995cf916aea4a407abb58be
Added to database: 2/18/2026, 2:41:21 PM
Last enriched: 4/9/2026, 11:18:47 AM
Last updated: 5/22/2026, 8:33:48 PM
Views: 105
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