CVE-2024-39031 Silverpeas Core Cross-site Scripting vulnerability

Q: Which versions are affected by CVE-2024-39031?

4 open source packages ship an affected version, including org.silverpeas.core:silverpeas-core-rs and org.silverpeas.core:silverpeas-core-web. It affects 1 product.

Q: Is CVE-2024-39031 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-39031 exists.

Q: How do I fix CVE-2024-39031?

No fix has been published for CVE-2024-39031 yet. Limit exposure of the affected software until one is available.

Medium 5.4 Published 9 Jul 2024 Updated 2 Aug 2024

Attackers can inject XSS payloads into calendar events to execute scripts in victims' browsers, potentially leading to account takeover or data theft.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2024-39031?

CVE-2024-39031 is a medium-severity cross-site scripting vulnerability in n/a, published on 9 Jul 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-79

Which versions are affected by CVE-2024-39031?

4 open source packages ship an affected version, including org.silverpeas.core:silverpeas-core-rs and org.silverpeas.core:silverpeas-core-web. It affects 1 product.

Package	Affected	Fixed in
`org.silverpeas.core:silverpeas-core-rs` Maven	All versions to `6.3.5`	None
`org.silverpeas.core:silverpeas-core-rs` Maven	All versions to `6.3.5`	None
`org.silverpeas.core:silverpeas-core-web` Maven	All versions to `6.3.5`	None
`org.silverpeas.core:silverpeas-core-web` Maven	All versions to `6.3.5`	None

Products include Silverpeas Silverpeas.

How do I fix CVE-2024-39031?

No fix has been published for CVE-2024-39031 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-39031 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-39031 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-vfwh-gvf6-mff8.