CVE-2024-27135

Name: CVE-2024-27135
Creator: NVD / NIST
Published: 2024-03-12T19:15:47.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.9/10EPSS 5.98%

Last modified Jun 17, 2026

CVE-2024-27135 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. 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. EPSS estimates a 5.98% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.9/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

5.98%

92.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apache	Pulsar	>= 2.4.0, < 2.10.6
Apache	Pulsar	>= 2.11.0, < 2.11.4
Apache	Pulsar	>= 3.0.0, < 3.0.3
Apache	Pulsar	>= 3.1.0, < 3.1.3
Apache	Pulsar	3.2.0

References

http://www.openwall.com/lists/oss-security/2024/03/12/9Mailing List, Third Party Advisory
https://lists.apache.org/thread/dh8nj2vmb2br6thjltq74lk9jxkz62wnVendor Advisory
https://pulsar.apache.org/security/CVE-2024-27135/Vendor Advisory
http://www.openwall.com/lists/oss-security/2024/03/12/9Mailing List, Third Party Advisory
https://lists.apache.org/thread/dh8nj2vmb2br6thjltq74lk9jxkz62wnVendor Advisory
https://pulsar.apache.org/security/CVE-2024-27135/Vendor Advisory

Timeline

Published: Mar 12, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-27135?

How severe is CVE-2024-27135?

CVE-2024-27135 has a CVSS score of 9.9/10 (CRITICAL severity). The EPSS model estimates a 5.98% probability of exploitation in the next 30 days.

How do I fix CVE-2024-27135?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-27135?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST