CVE-2026-66640: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Marcus (aka @msykes) Login With Ajax
Contributor Cross Site Scripting (XSS) in Login With Ajax <= 4.5.1 versions.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-79, exists in the Login With Ajax plugin versions up to 4.5.1. It allows an attacker with low privileges and requiring user interaction to execute cross-site scripting attacks by injecting malicious input that is not properly sanitized during web page generation. The CVSS 3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, and partial confidentiality, integrity, and availability impacts. No official fix or patch has been published yet, and no known exploits have been reported.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected application, potentially leading to partial compromise of confidentiality, integrity, and availability of the affected system or user data. However, exploitation requires user interaction and low privileges, limiting the scope of impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should apply standard XSS mitigations such as input validation and output encoding where possible. Monitor vendor channels for updates and apply official patches once released.
CVE-2026-66640: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Marcus (aka @msykes) Login With Ajax
Description
Contributor Cross Site Scripting (XSS) in Login With Ajax <= 4.5.1 versions.
CVSS v3.1
Score 6.5medium
Affected software
Marcus (aka @msykes)
Login With Ajax
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-79, exists in the Login With Ajax plugin versions up to 4.5.1. It allows an attacker with low privileges and requiring user interaction to execute cross-site scripting attacks by injecting malicious input that is not properly sanitized during web page generation. The CVSS 3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, and partial confidentiality, integrity, and availability impacts. No official fix or patch has been published yet, and no known exploits have been reported.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected application, potentially leading to partial compromise of confidentiality, integrity, and availability of the affected system or user data. However, exploitation requires user interaction and low privileges, limiting the scope of impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should apply standard XSS mitigations such as input validation and output encoding where possible. Monitor vendor channels for updates and apply official patches once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-07-27T14:00:34.306Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a846a48c6e8be033250a660
Added to database: 08/18/2026, 14:20:56 UTC
Last enriched: 08/18/2026, 15:20:29 UTC
Last updated: 10/02/2026, 02:46:05 UTC
Views: 30
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