CVE-2024-39031: silverpeas XSS — Exploit & Fix

Description

In Silverpeas Core <= 6.3.5, in Mes Agendas, a user can create new events and add them to their calendar. Additionally, users can invite others from the same domain, including administrators, to these events. A standard user can inject an XSS payload into the "Titre" and "Description" fields when creating an event and then add the administrator or any user to the event. When the invited user (victim) views their own profile, the payload will be executed on their side, even if they do not click on the event.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
silverpeas	silverpeas	< 6.4

References

Advisories & Patches

https://github.com/toneemarqus/CVE-2024-39031 https://www.github.com/Silverpeas/Silverpeas-Core/pull/1346 https://github.com/toneemarqus/CVE-2024-39031 https://www.github.com/Silverpeas/Silverpeas-Core/pull/1346

Exploits

https://github.com/toneemarqus/CVE-2024-39031 https://github.com/toneemarqus/CVE-2024-39031

Frequently Asked Questions

What is CVE-2024-39031? +

In Silverpeas Core <= 6.3.5, in Mes Agendas, a user can create new events and add them to their calendar. Additionally, users can invite others from the same domain, including administrators, to these events. A standard user can inject an XSS payload into the "Titre" and "Description" fields when creating an event and then add the administrator or any user to the event. When the invited user (victim) views their own profile, the payload will be executed on their side, even if they do not click on the event. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-39031? +

CVE-2024-39031 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-39031? +

CVE-2024-39031 affects products from silverpeas, specifically: silverpeas. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-39031? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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