Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Kafka's kafka-clients package, versions from 0.11.0 before 3.9.2 and from 4.0.0 before 4.0.1, can write entire request and response contents to the logs at DEBUG level, including sensitive data from several API requests and responses. Exposure requires DEBUG logging to be enabled, which is not the default, and anyone able to read those logs could see the sensitive data. Upgrade to kafka-clients 3.9.2, 4.0.1, or later. The source gives few details on exactly which data is exposed.
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 |
|---|---|---|---|---|
| 5.3 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0063, the 50th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:17 UTC First seen by agentprime
- 31 Oct 2026, 14:17 UTC Confirmed by OSV