CVE-2025-45055

MEDIUM

Silverpeas 6.4.2 - Authenticated Stored Cross-Site Scripting via SVG Event Attachment

Title source: llm

Description

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.

References (2)

Core 2

Core References

Patch

https://github.com/Silverpeas/Silverpeas-Core/pull/1394

Exploit, Third Party Advisory

https://medium.com/@mingihongkim/privilege-escalation-via-svg-injection-in-silverpeas-6-4-2-b5ab1d5b6955

Scores

CVSS v3 5.4

EPSS 0.0027

EPSS Percentile 18.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

silverpeas/silverpeas 6.4.2

Published Jun 09, 2025

Tracked Since Feb 18, 2026