Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Sakai packages sakai-conversations-impl, sakai-kernel-impl, and rubrics-impl versions 23.0 through 23.3 are affected. Any authenticated user with membership in a site that has the Conversations tool enabled can store topic, post, or comment messages containing HTML and JavaScript, which run in the browsers of other users who view them. No fixed version is listed.
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 |
|---|---|---|---|---|
| 8.7 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0032, the 25th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:19 UTC First seen by agentprime
- 31 Oct 2026, 14:19 UTC Confirmed by OSV