Unauthenticated Cross Site Scripting (XSS) in SmartSMTP <= 1.2.0 versions. (CVE-2026-66606)
An unauthenticated Cross Site Scripting (XSS) vulnerability exists in SmartSMTP versions up to and including 1.2.0. This vulnerability allows an attacker to inject malicious scripts without authentication, potentially impacting confidentiality, integrity, and availability of the affected system.
AI Analysis
Technical Summary
CVE-2026-66606 is an unauthenticated Cross Site Scripting (XSS) vulnerability affecting SmartSMTP versions up to 1.2.0. The vulnerability allows remote attackers to execute arbitrary scripts in the context of the affected application without requiring authentication. The CVSS 3.1 base score is 7.1, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation could lead to partial compromise of confidentiality, integrity, and availability of the affected system due to execution of arbitrary scripts in the user's browser context. This could facilitate further attacks such as session hijacking or unauthorized actions within the application.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently available. Users should monitor vendor communications for updates and consider applying any recommended mitigations once available.
Unauthenticated Cross Site Scripting (XSS) in SmartSMTP <= 1.2.0 versions. (CVE-2026-66606)
Description
An unauthenticated Cross Site Scripting (XSS) vulnerability exists in SmartSMTP versions up to and including 1.2.0. This vulnerability allows an attacker to inject malicious scripts without authentication, potentially impacting confidentiality, integrity, and availability of the affected system.
CVSS v3.1
Score 7.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-66606 is an unauthenticated Cross Site Scripting (XSS) vulnerability affecting SmartSMTP versions up to 1.2.0. The vulnerability allows remote attackers to execute arbitrary scripts in the context of the affected application without requiring authentication. The CVSS 3.1 base score is 7.1, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation could lead to partial compromise of confidentiality, integrity, and availability of the affected system due to execution of arbitrary scripts in the user's browser context. This could facilitate further attacks such as session hijacking or unauthorized actions within the application.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently available. Users should monitor vendor communications for updates and consider applying any recommended mitigations once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-jhjw-h99h-cgrf
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-66606"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a870a46acd9273b49b58383
Added to database: 08/20/2026, 14:08:06 UTC
Last enriched: 08/20/2026, 14:11:48 UTC
Last updated: 08/20/2026, 21:51:59 UTC
Views: 2
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