Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Cassandra 4.0.16 (Maven org.apache.cassandra:cassandra-all, affected versions 4.0.16 up to but not including 4.0.17) lets a user with MODIFY permission on all keyspaces escalate privileges to superuser through unsafe actions on a system resource. An attacker needs an account that already holds that permission, and can then gain full superuser control of the targeted cluster. Upgrade to 4.0.17, which fixes the issue.
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 |
|---|---|---|---|---|
| 8.8 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0052, the 44th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:10 UTC First seen by agentprime
- 31 Oct 2026, 15:10 UTC Confirmed by OSV