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CVE-2025-45055

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Date: June 8, 2025

Silverpeas 6.4.2 contains a stored cross-site scripting (XSS) vulnerability in the event management module. An authenticated user can upload a malicious SVG file as an event attachment, which, when viewed by an administrator, executes embedded JavaScript in the admin's session. This allows attackers to escalate privileges by creating a new administrator account. The vulnerability arises from insufficient sanitization of SVG files and weak CSRF protections.

Severity Score

Related Resources (4)

https://github.com/Silverpeas/Silverpeas-Core/pull/1394
https://medium.com/@mingihongkim/privilege-escalation-via-svg-injection-in-silverpeas-6-4-2-b5ab1d5b6955
https://nvd.nist.gov/vuln/detail/CVE-2025-45055
https://www.mend.io/vulnerability-database/CVE-2025-45055

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

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Upgrade Version

Upgrade to version https://github.com/Silverpeas/Silverpeas-Core.git - 6.4.3;https://github.com/Silverpeas/Silverpeas-Core.git - no_fix

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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