Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Pulsar's org.apache.pulsar:pulsar-functions-worker package, in versions 2.4.0 through 2.10.5, 2.11.0 through 2.11.3, 3.0.0 through 3.0.2, 3.1.0 through 3.1.2, and 3.2.0, has a directory traversal flaw in how it extracts uploaded jar or nar archives. An authenticated user who uploads a crafted archive can create or modify files outside the extraction directory, which may affect system behavior. The Pulsar Broker is also affected when functionsWorkerEnabled=true. Upgrade to 2.10.6, 2.11.4, 3.0.3, 3.1.3, or 3.2.1 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 |
|---|---|---|---|---|
| 8.4 | High | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L | CNA (apache) |
- CISA KEV Not listed.
- EPSS 0.57, the 99th 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