CVE-2026-59078
Received Received - Intake

Stored XSS in Edito CMS via Avatar Upload

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: CERT.PL

Description
Edito CMS is vulnerable to Stored XSS in avatar upload functionality. Authenticated attacker can inject arbitrary HTML and JS into website, which will be rendered/executed when visiting an URL leading to a edited avatar. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-59078
EUVD
EUVD-2026-124880

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Edito Edito CMS From 0 (inc) to 5.10.2607 (exc)

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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.

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Executive Summary

Edito CMS has a stored cross-site scripting (XSS) vulnerability in its avatar upload feature. An authenticated attacker can upload a malicious file containing HTML and JavaScript code. When other users view the attacker's edited avatar, the injected code executes in their browsers.

Detection Guidance

To detect this vulnerability, inspect uploaded avatar files for malicious scripts in Edito CMS. Check for unusual HTML/JS content in avatar URLs or database entries. Verify if the CMS version is below 5.10.2607 or if hotfixes for older versions (5.8) are missing.

Impact Analysis

This vulnerability allows attackers to steal user sessions, deface websites, or perform actions on behalf of users. It can lead to unauthorized data access, account takeovers, or spreading malware to other users who view the infected avatar.

Compliance Impact

This vulnerability may violate GDPR by enabling unauthorized access to personal data and HIPAA by compromising protected health information if user avatars are linked to sensitive data. It undermines data integrity and confidentiality requirements.

Mitigation Strategies

Immediately update Edito CMS to version 5.10.2607 or apply hotfixes for version 5.8. Remove any suspicious avatar files and sanitize existing ones. Monitor for unauthorized changes or script executions in avatar-related URLs.

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