CVE-2026-66590
Deferred Deferred - Pending Action

Unauthenticated XSS in Tagembed <= 7.4

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in Tagembed <= 7.4 versions.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-66590
EUVD
EUVD-2026-63334

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tagembed tagembed to 7.4 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability affecting Tagembed versions 7.4 and below. It allows attackers to inject malicious scripts into web pages viewed by other users without needing authentication.

Impact Analysis

An attacker could steal user sessions, deface websites, or redirect users to malicious sites. Users with sensitive data access could have their information compromised through script execution in their browsers.

Compliance Impact

This XSS vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality principles and HIPAA's security requirements for protected health information.

Mitigation Strategies

Update Tagembed to the latest version (7.4 or higher) to patch the XSS vulnerability. If immediate update is not possible, restrict user input validation and sanitize all outputs to prevent malicious script execution.

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