Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Silverpeas Core versions up to and including 6.3 are vulnerable to cross-site scripting through ClipboardSessionController. The source gives few details about the exact conditions. No fix is listed, so no upgrade version or workaround is provided.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.1 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0037, the 31st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:12 UTC First seen by agentprime
- 31 Oct 2026, 15:12 UTC Confirmed by OSV