Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Cassandra (org.apache.cassandra:cassandra-all, Maven) versions 4.0.2 through 5.0.2 running Java 11 are affected. A local attacker without access to the Cassandra process or configuration files can manipulate the RMI registry to perform a man-in-the-middle attack, capturing JMX usernames and passwords and then using them for unauthorized JMX operations. Upgrade to 4.0.15, 4.1.8, or 5.0.3 or later.
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 |
|---|---|---|---|---|
| 5.9 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0028, the 21st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:11 UTC First seen by agentprime
- 31 Oct 2026, 15:11 UTC Confirmed by OSV