XSS in Silverpeas
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (53.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.github.com/Silverpeas/Silverpeas-Core/pull/1346 (Patch, Issue Tracking)
- github.com/toneemarqus/CVE-2024-39031 (Exploit, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-39031?
- CVE-2024-39031 is a medium-severity vulnerability in Silverpeas, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2024-07-09.
- How severe is CVE-2024-39031?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2024-39031 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.