TI-2025-28727 Aliases CVE-2025-45055 GHSA-4377-g9q2-3wh5

Silverpeas 6.4.2 contains a stored cross-site scripting (XSS) vulnerability in the event…

MEDIUM 58CWE-79Published 2025-06-09 · Updated 2025-06-09

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00325 25th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:silverpeas:silverpeas:6.4.2:::::::*	6.4.2	Vulnerable	Silverpeas

cpe:2.3:a:silverpeas:silverpeas:6.4.2:*:*:*:*:*:*:* Versions 6.4.2 Vulnerable ·Silverpeas

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-45055
2026-10-03 Alias added: GHSA-4377-g9q2-3wh5

References

Exploit 1

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

Patch 1

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

TI-2024-23898 Silverpeas before 6.3.5 allows authentication bypass by omitting the Password field to… CVSS 3.1CRITICAL 9.8
TI-2024-32524 SQL Injection vulnerability in Silverpeas 6.4.1 allows a remote attacker to obtain… CVSS 3.1HIGH 7.5
TI-2023-25605 Silverpeas Core 6.3.1 is vulnerable to Incorrect Access Control. CVSS 3.1HIGH 8.1
TI-2025-28919 A User enumeration vulnerability in the /CredentialsServlet/ForgotPassword endpoint in… CVSS 3.1MEDIUM 6.5
TI-2024-28653 An issue in Silverpeas v.6.4.2 and lower allows a remote attacker to cause a denial of… CVSS 3.1MEDIUM 6.5
TI-2024-37707 Stored Cross-Site Scripting (XSS) Vulnerability in the Categorization Option of My… CVSS 3.1MEDIUM 5.4

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences