Apache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution
Improper input validation in the Pulsar Function Worker allows a malicious authenticated user to execute arbitrary Java code on the Pulsar Function worker, outside of the sandboxes designated for running user-provided functions. This vulnerability also applies to the Pulsar Broker when it is configured with "functionsWorkerEnabled=true".
This issue affects Apache Pulsar versions from 2.4.0 to 2.10.5, from 2.11.0 to 2.11.3, from 3.0.0 to 3.0.2, from 3.1.0 to 3.1.2, and 3.2.0.
2.10 Pulsar Function Worker users should upgrade to at least 2.10.6. 2.11 Pulsar Function Worker users should upgrade to at least 2.11.4. 3.0 Pulsar Function Worker users should upgrade to at least 3.0.3. 3.1 Pulsar Function Worker users should upgrade to at least 3.1.3. 3.2 Pulsar Function Worker users should upgrade to at least 3.2.1.
Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.pulsar:pulsar-functions-worker | >= 2.4.0, < 2.10.6, >= 2.11.0, < 2.11.4, >= 3.0.0, < 3.0.3, >= 3.1.0, < 3.1.3, >= 3.2.0, < 3.2.1 | 2.10.6, 2.11.4, 3.0.3, 3.1.3, 3.2.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H- Weakness (CWE)
CWE-20- Platform
- Java / Kotlin (Maven)
- Package
org.apache.pulsar:pulsar-functions-worker- Disclosed
- 12.03.2024
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-xp2r-g8qq-44hh - CC BY 4.0
Vulnerability history: org.apache.pulsar:pulsar-functions-worker
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 07.2023 03.2024
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 2
- Medium 1
Disclosures per year
- 2023: 1
- 2024: 3
- 2025: 0
- 2026: 0
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Apache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution this entry
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